31795137 has 12 divisors (see below), whose sum is σ = 50101584. Its totient is φ = 19269720.

The previous prime is 31795123. The next prime is 31795147. The reversal of 31795137 is 73159713.

It is not a de Polignac number, because 31795137 - 2⁴ = 31795121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31795147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160483 + ... + 160680.

It is an arithmetic number, because the mean of its divisors is an integer number (4175132).

Almost surely, 2^31795137 is an apocalyptic number.

It is an amenable number.

31795137 is a deficient number, since it is larger than the sum of its proper divisors (18306447).

31795137 is a wasteful number, since it uses less digits than its factorization.

31795137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321180 (or 321177 counting only the distinct ones).

The product of its digits is 19845, while the sum is 36.

The square root of 31795137 is about 5638.7176733722. The cubic root of 31795137 is about 316.8012599908.

The spelling of 31795137 in words is "thirty-one million, seven hundred ninety-five thousand, one hundred thirty-seven".