131252918 has 4 divisors (see below), whose sum is σ = 196879380. Its totient is φ = 65626458.

The previous prime is 131252911. The next prime is 131252921. The reversal of 131252918 is 819252131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131252911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32813228 + ... + 32813231.

It is an arithmetic number, because the mean of its divisors is an integer number (49219845).

Almost surely, 2^131252918 is an apocalyptic number.

131252918 is a deficient number, since it is larger than the sum of its proper divisors (65626462).

131252918 is an equidigital number, since it uses as much as digits as its factorization.

131252918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65626461.

The product of its digits is 4320, while the sum is 32.

The square root of 131252918 is about 11456.5665886425. The cubic root of 131252918 is about 508.2019445314.

The spelling of 131252918 in words is "one hundred thirty-one million, two hundred fifty-two thousand, nine hundred eighteen".