31409107 has 4 divisors (see below), whose sum is σ = 32422336. Its totient is φ = 30395880.

The previous prime is 31409087. The next prime is 31409167. The reversal of 31409107 is 70190413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70190413 = 139 ⋅504967.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31409107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31409167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506568 + ... + 506629.

It is an arithmetic number, because the mean of its divisors is an integer number (8105584).

Almost surely, 2^31409107 is an apocalyptic number.

31409107 is a deficient number, since it is larger than the sum of its proper divisors (1013229).

31409107 is a wasteful number, since it uses less digits than its factorization.

31409107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013228.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 31409107 is about 5604.3828384578. The cubic root of 31409107 is about 315.5139238198.

The spelling of 31409107 in words is "thirty-one million, four hundred nine thousand, one hundred seven".