31214013 has 8 divisors (see below), whose sum is σ = 43428288. Its totient is φ = 19904544.

The previous prime is 31213999. The next prime is 31214021. The reversal of 31214013 is 31041213.

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

It is not a de Polignac number, because 31214013 - 2⁵ = 31213981 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31213983 and 31214001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31214033) 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, 226120 + ... + 226257.

It is an arithmetic number, because the mean of its divisors is an integer number (5428536).

Almost surely, 2^31214013 is an apocalyptic number.

It is an amenable number.

31214013 is a deficient number, since it is larger than the sum of its proper divisors (12214275).

31214013 is a wasteful number, since it uses less digits than its factorization.

31214013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452403.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 31214013 is about 5586.9502414108. The cubic root of 31214013 is about 314.8593072883.

Adding to 31214013 its reverse (31041213), we get a palindrome (62255226).

The spelling of 31214013 in words is "thirty-one million, two hundred fourteen thousand, thirteen".