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23231118812 = 221123373791637
BaseRepresentation
bin10101101000101011…
…101011110111011100
32012222000110002222212
4111220223223313130
5340034131300222
614401111255552
71451455152236
oct255053536734
965860402885
1023231118812
1199413a7450
12460407a5b8
132262c20765
1411a5491256
1590e7646e2
hex568aebddc

23231118812 has 96 divisors (see below), whose sum is σ = 47683883520. Its totient is φ = 9795582720.

The previous prime is 23231118803. The next prime is 23231118853. The reversal of 23231118812 is 21881113232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14190458 + ... + 14192094.

It is an arithmetic number, because the mean of its divisors is an integer number (496707120).

Almost surely, 223231118812 is an apocalyptic number.

23231118812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

23231118812 is an abundant number, since it is smaller than the sum of its proper divisors (24452764708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23231118812 is a wasteful number, since it uses less digits than its factorization.

23231118812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091 (or 2089 counting only the distinct ones).

The product of its digits is 4608, while the sum is 32.

The spelling of 23231118812 in words is "twenty-three billion, two hundred thirty-one million, one hundred eighteen thousand, eight hundred twelve".

Divisors: 1 2 4 11 22 23 37 44 46 74 92 148 253 379 407 506 758 814 851 1012 1516 1628 1637 1702 3274 3404 4169 6548 8338 8717 9361 14023 16676 17434 18007 18722 28046 34868 36014 37444 37651 56092 60569 72028 75302 95887 121138 150604 154253 191774 242276 308506 322529 383548 414161 617012 620423 645058 666259 828322 1240846 1290116 1332518 1393087 1656644 2481692 2665036 2786174 3547819 5572348 6824653 7095638 13649306 14191276 14269729 15323957 22955651 27298612 28539458 30647914 45911302 57078916 61295828 91822604 156967019 252512161 313934038 505024322 527979973 627868076 1010048644 1055959946 2111919892 5807779703 11615559406 23231118812