31040475 has 24 divisors (see below), whose sum is σ = 51804720. Its totient is φ = 16398720.

The previous prime is 31040467. The next prime is 31040489. The reversal of 31040475 is 57404013.

It is not a de Polignac number, because 31040475 - 2³ = 31040467 is a prime.

It is a super-2 number, since 2×31040475² = 1927022176451250, which contains 22 as substring.

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, 6277 + ... + 10073.

It is an arithmetic number, because the mean of its divisors is an integer number (2158530).

Almost surely, 2^31040475 is an apocalyptic number.

31040475 is a deficient number, since it is larger than the sum of its proper divisors (20764245).

31040475 is a wasteful number, since it uses less digits than its factorization.

31040475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3919 (or 3914 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 31040475 is about 5571.3979394762. The cubic root of 31040475 is about 314.2747233956.

Adding to 31040475 its reverse (57404013), we get a palindrome (88444488).

The spelling of 31040475 in words is "thirty-one million, forty thousand, four hundred seventy-five".