131022120 has 64 divisors (see below), whose sum is σ = 405757440. Its totient is φ = 33811200.

The previous prime is 131022097. The next prime is 131022127. The reversal of 131022120 is 21220131.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 131022096 and 131022105.

It is not an unprimeable number, because it can be changed into a prime (131022127) 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, 13891 + ... + 21330.

It is an arithmetic number, because the mean of its divisors is an integer number (6339960).

Almost surely, 2^131022120 is an apocalyptic number.

131022120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131022120 is an abundant number, since it is smaller than the sum of its proper divisors (274735320).

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

131022120 is a wasteful number, since it uses less digits than its factorization.

131022120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35266 (or 35262 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 131022120 is about 11446.4894181579. The cubic root of 131022120 is about 507.9038919597.

Adding to 131022120 its reverse (21220131), we get a palindrome (152242251).

The spelling of 131022120 in words is "one hundred thirty-one million, twenty-two thousand, one hundred twenty".