97131 has 4 divisors (see below), whose sum is σ = 129512. Its totient is φ = 64752.

The previous prime is 97127. The next prime is 97151. The reversal of 97131 is 13179.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 97131 - 2² = 97127 is a prime.

It is a super-2 number, since 2×97131² = 18868862322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 97098 and 97107.

It is not an unprimeable number, because it can be changed into a prime (97151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16186 + ... + 16191.

It is an arithmetic number, because the mean of its divisors is an integer number (32378).

2⁹⁷¹³¹ is an apocalyptic number.

97131 is a deficient number, since it is larger than the sum of its proper divisors (32381).

97131 is a wasteful number, since it uses less digits than its factorization.

97131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32380.

The product of its digits is 189, while the sum is 21.

The square root of 97131 is about 311.6584669153. The cubic root of 97131 is about 45.9676836664.

It can be divided in two parts, 9 and 7131, that added together give a triangular number (7140 = T₁₁₉).

The spelling of 97131 in words is "ninety-seven thousand, one hundred thirty-one".