131660770 has 16 divisors (see below), whose sum is σ = 237125880. Its totient is φ = 52633984.

The previous prime is 131660723. The next prime is 131660777. The reversal of 131660770 is 77066131.

It can be written as a sum of positive squares in 4 ways, for example, as 111112681 + 20548089 = 10541^2 + 4533^2 .

It is not an unprimeable number, because it can be changed into a prime (131660777) 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, 24486 + ... + 29374.

Almost surely, 2^131660770 is an apocalyptic number.

131660770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131660770 is a deficient number, since it is larger than the sum of its proper divisors (105465110).

131660770 is a wasteful number, since it uses less digits than its factorization.

131660770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7589.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 131660770 is about 11474.3527050549. The cubic root of 131660770 is about 508.7277915316.

The spelling of 131660770 in words is "one hundred thirty-one million, six hundred sixty thousand, seven hundred seventy".