131388162 has 16 divisors (see below), whose sum is σ = 267230880. Its totient is φ = 43053632.

The previous prime is 131388161. The next prime is 131388193. The reversal of 131388162 is 261883131.

It is a super-2 number, since 2×131388162² = 34525698227476488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131388161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185223 + ... + 185930.

It is an arithmetic number, because the mean of its divisors is an integer number (16701930).

Almost surely, 2^131388162 is an apocalyptic number.

131388162 is an abundant number, since it is smaller than the sum of its proper divisors (135842718).

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

131388162 is a wasteful number, since it uses less digits than its factorization.

131388162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371217.

The product of its digits is 6912, while the sum is 33.

The square root of 131388162 is about 11462.4675353957. The cubic root of 131388162 is about 508.3764363224.

The spelling of 131388162 in words is "one hundred thirty-one million, three hundred eighty-eight thousand, one hundred sixty-two".