231242542204532 has 24 divisors (see below), whose sum is σ = 426565556323200. Its totient is φ = 109383596176896.

The previous prime is 231242542204493. The next prime is 231242542204559. The reversal of 231242542204532 is 235402245242132.

It is a super-2 number, since 2×231242542204532² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231242542204532.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2115845933 + ... + 2115955220.

It is an arithmetic number, because the mean of its divisors is an integer number (17773564846800).

Almost surely, 2^{231242542204532} is an apocalyptic number.

It is an amenable number.

231242542204532 is a deficient number, since it is larger than the sum of its proper divisors (195323014118668).

231242542204532 is a wasteful number, since it uses less digits than its factorization.

231242542204532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4231801895 (or 4231801893 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 41.

Adding to 231242542204532 its reverse (235402245242132), we get a palindrome (466644787446664).

The spelling of 231242542204532 in words is "two hundred thirty-one trillion, two hundred forty-two billion, five hundred forty-two million, two hundred four thousand, five hundred thirty-two".