82945131 has 4 divisors (see below), whose sum is σ = 110593512. Its totient is φ = 55296752.

The previous prime is 82945123. The next prime is 82945147. The reversal of 82945131 is 13154928.

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

It is a cyclic number.

It is not a de Polignac number, because 82945131 - 2³ = 82945123 is a prime.

It is a super-2 number, since 2×82945131² = 13759789513214322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 82945092 and 82945101.

It is not an unprimeable number, because it can be changed into a prime (82945931) 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, 13824186 + ... + 13824191.

It is an arithmetic number, because the mean of its divisors is an integer number (27648378).

Almost surely, 2^82945131 is an apocalyptic number.

82945131 is a deficient number, since it is larger than the sum of its proper divisors (27648381).

82945131 is a wasteful number, since it uses less digits than its factorization.

82945131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27648380.

The product of its digits is 8640, while the sum is 33.

The square root of 82945131 is about 9107.4217537127. The cubic root of 82945131 is about 436.1109244885.

The spelling of 82945131 in words is "eighty-two million, nine hundred forty-five thousand, one hundred thirty-one".