231531423455202 has 16 divisors (see below), whose sum is σ = 498683065903680. Its totient is φ = 71240437986192.

The previous prime is 231531423455159. The next prime is 231531423455207. The reversal of 231531423455202 is 202554324135132.

It is not an unprimeable number, because it can be changed into a prime (231531423455207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1484175791302 + ... + 1484175791457.

It is an arithmetic number, because the mean of its divisors is an integer number (31167691618980).

Almost surely, 2^{231531423455202} is an apocalyptic number.

231531423455202 is an abundant number, since it is smaller than the sum of its proper divisors (267151642448478).

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

231531423455202 is a wasteful number, since it uses less digits than its factorization.

231531423455202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2968351582777.

The product of its (nonzero) digits is 864000, while the sum is 42.

The spelling of 231531423455202 in words is "two hundred thirty-one trillion, five hundred thirty-one billion, four hundred twenty-three million, four hundred fifty-five thousand, two hundred two".