231545443430554 has 32 divisors (see below), whose sum is σ = 379723897552896. Its totient is φ = 105017012820720.

The previous prime is 231545443430551. The next prime is 231545443430629. The reversal of 231545443430554 is 455034344545132.

It is a super-2 number, since 2×231545443430554² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231545443430551) 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, 308943979 + ... + 309692545.

It is an arithmetic number, because the mean of its divisors is an integer number (11866371798528).

Almost surely, 2^{231545443430554} is an apocalyptic number.

231545443430554 is a deficient number, since it is larger than the sum of its proper divisors (148178454122342).

231545443430554 is a wasteful number, since it uses less digits than its factorization.

231545443430554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779410.

The product of its (nonzero) digits is 34560000, while the sum is 52.

Adding to 231545443430554 its reverse (455034344545132), we get a palindrome (686579787975686).

The spelling of 231545443430554 in words is "two hundred thirty-one trillion, five hundred forty-five billion, four hundred forty-three million, four hundred thirty thousand, five hundred fifty-four".