97973131 has 4 divisors (see below), whose sum is σ = 98943264. Its totient is φ = 97003000.

The previous prime is 97973129. The next prime is 97973143. The reversal of 97973131 is 13137979.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13137979 = 101 ⋅130079.

It is a cyclic number.

It is not a de Polignac number, because 97973131 - 2¹ = 97973129 is a prime.

It is a super-2 number, since 2×97973131² = 19197468795886322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97973111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 484915 + ... + 485116.

It is an arithmetic number, because the mean of its divisors is an integer number (24735816).

Almost surely, 2^97973131 is an apocalyptic number.

97973131 is a deficient number, since it is larger than the sum of its proper divisors (970133).

97973131 is a wasteful number, since it uses less digits than its factorization.

97973131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970132.

The product of its digits is 35721, while the sum is 40.

The square root of 97973131 is about 9898.1377541435. The cubic root of 97973131 is about 461.0014900440.

The spelling of 97973131 in words is "ninety-seven million, nine hundred seventy-three thousand, one hundred thirty-one".