231531534300534 has 64 divisors (see below), whose sum is σ = 498989741644800. Its totient is φ = 71196704847360.

The previous prime is 231531534300487. The next prime is 231531534300589. The reversal of 231531534300534 is 435003435135132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1233878899 + ... + 1234066529.

It is an arithmetic number, because the mean of its divisors is an integer number (7796714713200).

Almost surely, 2^{231531534300534} is an apocalyptic number.

231531534300534 is an abundant number, since it is smaller than the sum of its proper divisors (267458207344266).

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

231531534300534 is a wasteful number, since it uses less digits than its factorization.

231531534300534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197285.

The product of its (nonzero) digits is 972000, while the sum is 42.

Adding to 231531534300534 its reverse (435003435135132), we get a palindrome (666534969435666).

The spelling of 231531534300534 in words is "two hundred thirty-one trillion, five hundred thirty-one billion, five hundred thirty-four million, three hundred thousand, five hundred thirty-four".