231110121120 has 96 divisors (see below), whose sum is σ = 728227221120. Its totient is φ = 61609866240.

The previous prime is 231110121083. The next prime is 231110121157. The reversal of 231110121120 is 21121011132.

It is an interprime number because it is at equal distance from previous prime (231110121083) and next prime (231110121157).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 231110121120.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1475365 + ... + 1624475.

It is an arithmetic number, because the mean of its divisors is an integer number (7585700220).

Almost surely, 2^231110121120 is an apocalyptic number.

231110121120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231110121120 is an abundant number, since it is smaller than the sum of its proper divisors (497117100000).

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

231110121120 is a wasteful number, since it uses less digits than its factorization.

231110121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152358 (or 152350 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 231110121120 its reverse (21121011132), we get a palindrome (252231132252).

The spelling of 231110121120 in words is "two hundred thirty-one billion, one hundred ten million, one hundred twenty-one thousand, one hundred twenty".