231133022120 has 128 divisors (see below), whose sum is σ = 698248131840. Its totient is φ = 66499799040.

The previous prime is 231133022111. The next prime is 231133022129. The reversal of 231133022120 is 21220331132.

It is an interprime number because it is at equal distance from previous prime (231133022111) and next prime (231133022129).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 231133022092 and 231133022101.

It is not an unprimeable number, because it can be changed into a prime (231133022129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2846237 + ... + 2926316.

It is an arithmetic number, because the mean of its divisors is an integer number (5455063530).

Almost surely, 2^231133022120 is an apocalyptic number.

231133022120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231133022120 is an abundant number, since it is smaller than the sum of its proper divisors (467115109720).

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

231133022120 is a wasteful number, since it uses less digits than its factorization.

231133022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5772595 (or 5772591 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 231133022120 its reverse (21220331132), we get a palindrome (252353353252).

The spelling of 231133022120 in words is "two hundred thirty-one billion, one hundred thirty-three million, twenty-two thousand, one hundred twenty".