31980095 has 12 divisors (see below), whose sum is σ = 44641944. Its totient is φ = 21929040.

The previous prime is 31980083. The next prime is 31980101. The reversal of 31980095 is 59008913.

It is not a de Polignac number, because 31980095 - 2¹⁸ = 31717951 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65021 + ... + 65510.

It is an arithmetic number, because the mean of its divisors is an integer number (3720162).

Almost surely, 2^31980095 is an apocalyptic number.

31980095 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

31980095 is a deficient number, since it is larger than the sum of its proper divisors (12661849).

31980095 is a wasteful number, since it uses less digits than its factorization.

31980095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130550 (or 130543 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 31980095 is about 5655.0946057515. The cubic root of 31980095 is about 317.4143692026.

The spelling of 31980095 in words is "thirty-one million, nine hundred eighty thousand, ninety-five".