231545352511155 has 16 divisors (see below), whose sum is σ = 370476851340960. Its totient is φ = 123489425564928.

The previous prime is 231545352511141. The next prime is 231545352511157. The reversal of 231545352511155 is 551115253545132.

It is not a de Polignac number, because 231545352511155 - 2²⁴ = 231545335733939 is a prime.

It is a super-2 number, since 2×231545352511155² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231545352511157) 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, 87979210 + ... + 90572799.

It is an arithmetic number, because the mean of its divisors is an integer number (23154803208810).

Almost surely, 2^{231545352511155} is an apocalyptic number.

231545352511155 is a deficient number, since it is larger than the sum of its proper divisors (138931498829805).

231545352511155 is a wasteful number, since it uses less digits than its factorization.

231545352511155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178638470.

The product of its digits is 2250000, while the sum is 48.

The spelling of 231545352511155 in words is "two hundred thirty-one trillion, five hundred forty-five billion, three hundred fifty-two million, five hundred eleven thousand, one hundred fifty-five".