131238288 has 60 divisors (see below), whose sum is σ = 375118848. Its totient is φ = 42813120.

The previous prime is 131238277. The next prime is 131238323. The reversal of 131238288 is 882832131.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2928 + ... + 16463.

Almost surely, 2^131238288 is an apocalyptic number.

131238288 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

131238288 is an abundant number, since it is smaller than the sum of its proper divisors (243880560).

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

131238288 is a wasteful number, since it uses less digits than its factorization.

131238288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19452 (or 19443 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 131238288 is about 11455.9280723999. The cubic root of 131238288 is about 508.1830617240.

The spelling of 131238288 in words is "one hundred thirty-one million, two hundred thirty-eight thousand, two hundred eighty-eight".