231121310221232 has 20 divisors (see below), whose sum is σ = 471365830057080. Its totient is φ = 109478515367808.

The previous prime is 231121310221181. The next prime is 231121310221283. The reversal of 231121310221232 is 232122013121132.

It is an interprime number because it is at equal distance from previous prime (231121310221181) and next prime (231121310221283).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380133733613 + ... + 380133734220.

It is an arithmetic number, because the mean of its divisors is an integer number (23568291502854).

Almost surely, 2^{231121310221232} is an apocalyptic number.

It is an amenable number.

231121310221232 is an abundant number, since it is smaller than the sum of its proper divisors (240244519835848).

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

231121310221232 is a wasteful number, since it uses less digits than its factorization.

231121310221232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760267467860 (or 760267467854 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 231121310221232 its reverse (232122013121132), we get a palindrome (463243323342364).

The spelling of 231121310221232 in words is "two hundred thirty-one trillion, one hundred twenty-one billion, three hundred ten million, two hundred twenty-one thousand, two hundred thirty-two".