1231128321052 has 12 divisors (see below), whose sum is σ = 2462256642160. Its totient is φ = 527626423296.

The previous prime is 1231128321043. The next prime is 1231128321103. The reversal of 1231128321052 is 2501238211321.

1231128321052 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21984434277 + ... + 21984434332.

Almost surely, 2^{1231128321052} is an apocalyptic number.

It is an amenable number.

1231128321052 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1231128321052 is a wasteful number, since it uses less digits than its factorization.

1231128321052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43968868620 (or 43968868618 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 1231128321052 in words is "one trillion, two hundred thirty-one billion, one hundred twenty-eight million, three hundred twenty-one thousand, fifty-two".