1231604565102 has 48 divisors (see below), whose sum is σ = 2683409988480. Its totient is φ = 408243370896.

The previous prime is 1231604565077. The next prime is 1231604565143. The reversal of 1231604565102 is 2015654061321.

1231604565102 is a `hidden beast` number, since 1 + 2 + 31 + 60 + 4 + 56 + 510 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2232549 + ... + 2729007.

It is an arithmetic number, because the mean of its divisors is an integer number (55904374760).

Almost surely, 2^{1231604565102} is an apocalyptic number.

1231604565102 is an abundant number, since it is smaller than the sum of its proper divisors (1451805423378).

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

1231604565102 is a wasteful number, since it uses less digits than its factorization.

1231604565102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497237 (or 497234 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 1231604565102 in words is "one trillion, two hundred thirty-one billion, six hundred four million, five hundred sixty-five thousand, one hundred two".