131097393 has 48 divisors (see below), whose sum is σ = 227525760. Its totient is φ = 74384352.

The previous prime is 131097389. The next prime is 131097409. The reversal of 131097393 is 393790131.

It is not a de Polignac number, because 131097393 - 2² = 131097389 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131097383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 260380 + ... + 260882.

It is an arithmetic number, because the mean of its divisors is an integer number (4740120).

Almost surely, 2^131097393 is an apocalyptic number.

It is an amenable number.

131097393 is a deficient number, since it is larger than the sum of its proper divisors (96428367).

131097393 is a wasteful number, since it uses less digits than its factorization.

131097393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723 (or 710 counting only the distinct ones).

The product of its (nonzero) digits is 15309, while the sum is 36.

The square root of 131097393 is about 11449.7769847277. The cubic root of 131097393 is about 508.0011379581.

It can be divided in two parts, 13109 and 7393, that added together give a palindrome (20502).

The spelling of 131097393 in words is "one hundred thirty-one million, ninety-seven thousand, three hundred ninety-three".