31144995 has 24 divisors (see below), whose sum is σ = 61697376. Its totient is φ = 14237568.

The previous prime is 31144963. The next prime is 31145011. The reversal of 31144995 is 59944113.

It is a happy number.

It is not a de Polignac number, because 31144995 - 2⁵ = 31144963 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49122 + ... + 49751.

It is an arithmetic number, because the mean of its divisors is an integer number (2570724).

Almost surely, 2^31144995 is an apocalyptic number.

31144995 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

31144995 is a deficient number, since it is larger than the sum of its proper divisors (30552381).

31144995 is a wasteful number, since it uses less digits than its factorization.

31144995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98891 (or 98888 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 31144995 is about 5580.7701081482. The cubic root of 31144995 is about 314.6270718926.

The spelling of 31144995 in words is "thirty-one million, one hundred forty-four thousand, nine hundred ninety-five".