131000022 has 24 divisors (see below), whose sum is σ = 298772760. Its totient is φ = 41368320.

The previous prime is 131000021. The next prime is 131000057. The reversal of 131000022 is 220000131.

It is a happy number.

It is a super-2 number, since 2×131000022² = 34322011528000968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 130999968 and 131000013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131000021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 191179 + ... + 191862.

It is an arithmetic number, because the mean of its divisors is an integer number (12448865).

Almost surely, 2^131000022 is an apocalyptic number.

131000022 is an abundant number, since it is smaller than the sum of its proper divisors (167772738).

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

131000022 is a wasteful number, since it uses less digits than its factorization.

131000022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383068 (or 383065 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 131000022 is about 11445.5241033340. The cubic root of 131000022 is about 507.8753362439.

Adding to 131000022 its reverse (220000131), we get a palindrome (351000153).

The spelling of 131000022 in words is "one hundred thirty-one million, twenty-two", and thus it is an aban number.