231545443430504 has 64 divisors (see below), whose sum is σ = 522642410044800. Its totient is φ = 93946230031104.

The previous prime is 231545443430501. The next prime is 231545443430531. The reversal of 231545443430504 is 405034344545132.

It is a super-2 number, since 2×231545443430504² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231545443430501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73339727 + ... + 76431710.

It is an arithmetic number, because the mean of its divisors is an integer number (8166287656950).

Almost surely, 2^{231545443430504} is an apocalyptic number.

It is an amenable number.

231545443430504 is an abundant number, since it is smaller than the sum of its proper divisors (291096966614296).

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

231545443430504 is a wasteful number, since it uses less digits than its factorization.

231545443430504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149772922 (or 149772918 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 47.

Adding to 231545443430504 its reverse (405034344545132), we get a palindrome (636579787975636).

The spelling of 231545443430504 in words is "two hundred thirty-one trillion, five hundred forty-five billion, four hundred forty-three million, four hundred thirty thousand, five hundred four".