31040417 has 4 divisors (see below), whose sum is σ = 31164336. Its totient is φ = 30916500.

The previous prime is 31040413. The next prime is 31040459. The reversal of 31040417 is 71404013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31040417 - 2² = 31040413 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31040413) 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 3 ways as a sum of consecutive naturals, for example, 61583 + ... + 62084.

It is an arithmetic number, because the mean of its divisors is an integer number (7791084).

Almost surely, 2^31040417 is an apocalyptic number.

It is an amenable number.

31040417 is a deficient number, since it is larger than the sum of its proper divisors (123919).

31040417 is a wasteful number, since it uses less digits than its factorization.

31040417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123918.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 31040417 is about 5571.3927343170. The cubic root of 31040417 is about 314.2745276518.

It can be divided in two parts, 3 and 1040417, that multiplied together give a triangular number (3121251 = T₂₄₉₈).

The spelling of 31040417 in words is "thirty-one million, forty thousand, four hundred seventeen".