131688610 has 16 divisors (see below), whose sum is σ = 238612032. Its totient is φ = 52326000.

The previous prime is 131688607. The next prime is 131688611. The reversal of 131688610 is 16886131.

It is not an unprimeable number, because it can be changed into a prime (131688611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42096 + ... + 45115.

It is an arithmetic number, because the mean of its divisors is an integer number (14913252).

Almost surely, 2^131688610 is an apocalyptic number.

131688610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131688610 is a deficient number, since it is larger than the sum of its proper divisors (106923422).

131688610 is a wasteful number, since it uses less digits than its factorization.

131688610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87369.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 131688610 is about 11475.5657812589. The cubic root of 131688610 is about 508.7636462603.

The spelling of 131688610 in words is "one hundred thirty-one million, six hundred eighty-eight thousand, six hundred ten".