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31232130119 = 75431414049
BaseRepresentation
bin11101000101100101…
…000111110001000111
32222121121202121010222
4131011211013301013
51002430411130434
622203044534555
72153650503641
oct350545076107
988547677128
1031232130119
11122777a5693
1260776b145b
132c39728c88
141723d3d891
15c2bdae72e
hex745947c47

31232130119 has 4 divisors (see below), whose sum is σ = 31232619600. Its totient is φ = 31231640640.

The previous prime is 31232130107. The next prime is 31232130133. The reversal of 31232130119 is 91103123213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91103123213 = 443205650391.

It is a cyclic number.

It is not a de Polignac number, because 31232130119 - 232 = 26937162823 is a prime.

It is a super-2 number, since 2×312321301192 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31232132119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131594 + ... + 282455.

It is an arithmetic number, because the mean of its divisors is an integer number (7808154900).

Almost surely, 231232130119 is an apocalyptic number.

31232130119 is a deficient number, since it is larger than the sum of its proper divisors (489481).

31232130119 is an equidigital number, since it uses as much as digits as its factorization.

31232130119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489480.

The product of its (nonzero) digits is 972, while the sum is 26.

The spelling of 31232130119 in words is "thirty-one billion, two hundred thirty-two million, one hundred thirty thousand, one hundred nineteen".

Divisors: 1 75431 414049 31232130119