1531147213356 has 48 divisors (see below), whose sum is σ = 3791197267200. Its totient is φ = 479917421632.

The previous prime is 1531147213291. The next prime is 1531147213399. The reversal of 1531147213356 is 6533127411351.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46997571 + ... + 47030138.

It is an arithmetic number, because the mean of its divisors is an integer number (78983276400).

Almost surely, 2^{1531147213356} is an apocalyptic number.

It is an amenable number.

1531147213356 is an abundant number, since it is smaller than the sum of its proper divisors (2260050053844).

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

1531147213356 is a wasteful number, since it uses less digits than its factorization.

1531147213356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94027798 (or 94027796 counting only the distinct ones).

The product of its digits is 226800, while the sum is 42.

The spelling of 1531147213356 in words is "one trillion, five hundred thirty-one billion, one hundred forty-seven million, two hundred thirteen thousand, three hundred fifty-six".