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1231414864 = 2476963429
BaseRepresentation
bin100100101100101…
…1110011001010000
310011211010100121221
41021121132121100
510010220233424
6322105254424
742341565541
oct11131363120
93154110557
101231414864
11582113239
122a4494414
13168173464
14b978a4c8
15731939e4
hex4965e650

1231414864 has 10 divisors (see below), whose sum is σ = 2385866330. Its totient is φ = 615707424.

The previous prime is 1231414859. The next prime is 1231414937. The reversal of 1231414864 is 4684141321.

It can be written as a sum of positive squares in only one way, i.e., 800437264 + 430977600 = 28292^2 + 20760^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38481699 + ... + 38481730.

It is an arithmetic number, because the mean of its divisors is an integer number (238586633).

Almost surely, 21231414864 is an apocalyptic number.

It is an amenable number.

1231414864 is a deficient number, since it is larger than the sum of its proper divisors (1154451466).

1231414864 is an equidigital number, since it uses as much as digits as its factorization.

1231414864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76963437 (or 76963431 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 1231414864 is about 35091.5212551408. The cubic root of 1231414864 is about 1071.8519371137.

The spelling of 1231414864 in words is "one billion, two hundred thirty-one million, four hundred fourteen thousand, eight hundred sixty-four".

Divisors: 1 2 4 8 16 76963429 153926858 307853716 615707432 1231414864