31316406 has 16 divisors (see below), whose sum is σ = 68326848. Its totient is φ = 9489800.

The previous prime is 31316387. The next prime is 31316413. The reversal of 31316406 is 60461313.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237180 + ... + 237311.

It is an arithmetic number, because the mean of its divisors is an integer number (4270428).

Almost surely, 2^31316406 is an apocalyptic number.

31316406 is an abundant number, since it is smaller than the sum of its proper divisors (37010442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31316406 is a wasteful number, since it uses less digits than its factorization.

31316406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474507.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 31316406 is about 5596.1063249370. The cubic root of 31316406 is about 315.2032148035.

Adding to 31316406 its reverse (60461313), we get a palindrome (91777719).

The spelling of 31316406 in words is "thirty-one million, three hundred sixteen thousand, four hundred six".