31359853 has 6 divisors (see below), whose sum is σ = 36479886. Its totient is φ = 26879832.

The previous prime is 31359847. The next prime is 31359863. The reversal of 31359853 is 35895313.

It can be written as a sum of positive squares in only one way, i.e., 30272004 + 1087849 = 5502^2 + 1043^2 .

It is not a de Polignac number, because 31359853 - 2¹⁷ = 31228781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31359803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 319950 + ... + 320047.

It is an arithmetic number, because the mean of its divisors is an integer number (6079981).

Almost surely, 2^31359853 is an apocalyptic number.

It is an amenable number.

31359853 is a deficient number, since it is larger than the sum of its proper divisors (5120033).

31359853 is an equidigital number, since it uses as much as digits as its factorization.

31359853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640011 (or 640004 counting only the distinct ones).

The product of its digits is 48600, while the sum is 37.

The square root of 31359853 is about 5599.9868749846. The cubic root of 31359853 is about 315.3489137900.

The spelling of 31359853 in words is "thirty-one million, three hundred fifty-nine thousand, eight hundred fifty-three".