131897308 has 6 divisors (see below), whose sum is σ = 230820296. Its totient is φ = 65948652.

The previous prime is 131897291. The next prime is 131897309. The reversal of 131897308 is 803798131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131897309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16487160 + ... + 16487167.

Almost surely, 2^131897308 is an apocalyptic number.

It is an amenable number.

131897308 is a deficient number, since it is larger than the sum of its proper divisors (98922988).

131897308 is a wasteful number, since it uses less digits than its factorization.

131897308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32974331 (or 32974329 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 131897308 is about 11484.6553278712. The cubic root of 131897308 is about 509.0322645689.

The spelling of 131897308 in words is "one hundred thirty-one million, eight hundred ninety-seven thousand, three hundred eight".