231531532152354 has 96 divisors (see below), whose sum is σ = 573602747028480. Its totient is φ = 66118807893600.

The previous prime is 231531532152353. The next prime is 231531532152397. The reversal of 231531532152354 is 453251235135132.

It is a happy number.

231531532152354 is a `hidden beast` number, since 2 + 3 + 1 + 5 + 3 + 1 + 53 + 21 + 523 + 54 = 666.

It is not an unprimeable number, because it can be changed into a prime (231531532152353) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 2412467589 + ... + 2412563559.

It is an arithmetic number, because the mean of its divisors is an integer number (5975028614880).

Almost surely, 2^{231531532152354} is an apocalyptic number.

231531532152354 is an abundant number, since it is smaller than the sum of its proper divisors (342071214876126).

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

231531532152354 is a wasteful number, since it uses less digits than its factorization.

231531532152354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105356 (or 105353 counting only the distinct ones).

The product of its digits is 1620000, while the sum is 45.

Adding to 231531532152354 its reverse (453251235135132), we get a palindrome (684782767287486).

The spelling of 231531532152354 in words is "two hundred thirty-one trillion, five hundred thirty-one billion, five hundred thirty-two million, one hundred fifty-two thousand, three hundred fifty-four".