131273397 has 48 divisors (see below), whose sum is σ = 205590528. Its totient is φ = 80514720.

The previous prime is 131273393. The next prime is 131273399. The reversal of 131273397 is 793372131.

131273397 is a `hidden beast` number, since 1 + 312 + 7 + 339 + 7 = 666.

It is not a de Polignac number, because 131273397 - 2² = 131273393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131273393) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1002022 + ... + 1002152.

It is an arithmetic number, because the mean of its divisors is an integer number (4283136).

Almost surely, 2^131273397 is an apocalyptic number.

It is an amenable number.

131273397 is a deficient number, since it is larger than the sum of its proper divisors (74317131).

131273397 is a wasteful number, since it uses less digits than its factorization.

131273397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 307 counting only the distinct ones).

The product of its digits is 23814, while the sum is 36.

The square root of 131273397 is about 11457.4603206819. The cubic root of 131273397 is about 508.2283742330.

The spelling of 131273397 in words is "one hundred thirty-one million, two hundred seventy-three thousand, three hundred ninety-seven".