31400413 has 8 divisors (see below), whose sum is σ = 34295616. Its totient is φ = 28512000.

The previous prime is 31400401. The next prime is 31400429.

31400413 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-31400413 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 (31403413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16720 + ... + 18502.

It is an arithmetic number, because the mean of its divisors is an integer number (4286952).

Almost surely, 2^31400413 is an apocalyptic number.

It is an amenable number.

31400413 is a deficient number, since it is larger than the sum of its proper divisors (2895203).

31400413 is a wasteful number, since it uses less digits than its factorization.

31400413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3395.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 31400413 is about 5603.6071418328. The cubic root of 31400413 is about 315.4848098520.

It can be divided in two parts, 31400 and 413, that added together give a palindrome (31813).

The spelling of 31400413 in words is "thirty-one million, four hundred thousand, four hundred thirteen".