131791370 has 16 divisors (see below), whose sum is σ = 245405160. Its totient is φ = 50898624.

The previous prime is 131791367. The next prime is 131791379. The reversal of 131791370 is 73197131.

It can be written as a sum of positive squares in 4 ways, for example, as 124300201 + 7491169 = 11149^2 + 2737^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131791379) 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, 226937 + ... + 227516.

Almost surely, 2^131791370 is an apocalyptic number.

131791370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131791370 is a deficient number, since it is larger than the sum of its proper divisors (113613790).

131791370 is a wasteful number, since it uses less digits than its factorization.

131791370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454489.

The product of its (nonzero) digits is 3969, while the sum is 32.

The square root of 131791370 is about 11480.0422473090. The cubic root of 131791370 is about 508.8959456281.

The spelling of 131791370 in words is "one hundred thirty-one million, seven hundred ninety-one thousand, three hundred seventy".