31371093 has 24 divisors (see below), whose sum is σ = 49481432. Its totient is φ = 19035648.

The previous prime is 31371091. The next prime is 31371097. The reversal of 31371093 is 39017313.

It can be written as a sum of positive squares in 4 ways, for example, as 33489 + 31337604 = 183^2 + 5598^2 .

It is not a de Polignac number, because 31371093 - 2¹ = 31371091 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31371091) by changing a digit.

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

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6705 + ... + 10377.

Almost surely, 2^31371093 is an apocalyptic number.

It is an amenable number.

31371093 is a deficient number, since it is larger than the sum of its proper divisors (18110339).

31371093 is a wasteful number, since it uses less digits than its factorization.

31371093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3765 (or 3762 counting only the distinct ones).

The product of its (nonzero) digits is 1701, while the sum is 27.

The square root of 31371093 is about 5600.9903588562. The cubic root of 31371093 is about 315.3865850805.

The spelling of 31371093 in words is "thirty-one million, three hundred seventy-one thousand, ninety-three".