31214613 has 8 divisors (see below), whose sum is σ = 42962176. Its totient is φ = 20138400.

The previous prime is 31214597. The next prime is 31214639. The reversal of 31214613 is 31641213.

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

It is not a de Polignac number, because 31214613 - 2⁴ = 31214597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31214613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31214683) 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, 167728 + ... + 167913.

It is an arithmetic number, because the mean of its divisors is an integer number (5370272).

Almost surely, 2^31214613 is an apocalyptic number.

It is an amenable number.

31214613 is a deficient number, since it is larger than the sum of its proper divisors (11747563).

31214613 is a wasteful number, since it uses less digits than its factorization.

31214613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335675.

The product of its digits is 432, while the sum is 21.

The square root of 31214613 is about 5587.0039377112. The cubic root of 31214613 is about 314.8613246982.

Adding to 31214613 its reverse (31641213), we get a palindrome (62855826).

The spelling of 31214613 in words is "thirty-one million, two hundred fourteen thousand, six hundred thirteen".