231122056 has 32 divisors (see below), whose sum is σ = 473457600. Its totient is φ = 104898240.

The previous prime is 231122027. The next prime is 231122063. The reversal of 231122056 is 650221132.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73525 + ... + 76603.

It is an arithmetic number, because the mean of its divisors is an integer number (14795550).

Almost surely, 2^231122056 is an apocalyptic number.

It is an amenable number.

231122056 is an abundant number, since it is smaller than the sum of its proper divisors (242335544).

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

231122056 is a wasteful number, since it uses less digits than its factorization.

231122056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3949 (or 3945 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 231122056 is about 15202.6989709064. The cubic root of 231122056 is about 613.6872927999.

Adding to 231122056 its reverse (650221132), we get a palindrome (881343188).

The spelling of 231122056 in words is "two hundred thirty-one million, one hundred twenty-two thousand, fifty-six".