31214005 has 16 divisors (see below), whose sum is σ = 39394800. Its totient is φ = 23708160.

The previous prime is 31213999. The next prime is 31214021. The reversal of 31214005 is 50041213.

It can be written as a sum of positive squares in 8 ways, for example, as 9897316 + 21316689 = 3146^2 + 4617^2 .

It is not a de Polignac number, because 31214005 - 2¹³ = 31205813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31214005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7081 + ... + 10609.

It is an arithmetic number, because the mean of its divisors is an integer number (2462175).

Almost surely, 2^31214005 is an apocalyptic number.

It is an amenable number.

31214005 is a deficient number, since it is larger than the sum of its proper divisors (8180795).

31214005 is a wasteful number, since it uses less digits than its factorization.

31214005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3624.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 31214005 is about 5586.9495254566. The cubic root of 31214005 is about 314.8592803893.

Adding to 31214005 its reverse (50041213), we get a palindrome (81255218).

The spelling of 31214005 in words is "thirty-one million, two hundred fourteen thousand, five".