31315063 has 16 divisors (see below), whose sum is σ = 34595680. Its totient is φ = 28169856.

The previous prime is 31315013. The next prime is 31315069. The reversal of 31315063 is 36051313.

It is not a de Polignac number, because 31315063 - 2¹⁷ = 31183991 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 (31315069) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 136633 + ... + 136861.

It is an arithmetic number, because the mean of its divisors is an integer number (2162230).

Almost surely, 2^31315063 is an apocalyptic number.

31315063 is a deficient number, since it is larger than the sum of its proper divisors (3280617).

31315063 is a wasteful number, since it uses less digits than its factorization.

31315063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466.

The product of its (nonzero) digits is 810, while the sum is 22.

The square root of 31315063 is about 5595.9863295044. The cubic root of 31315063 is about 315.1987089228.

Adding to 31315063 its reverse (36051313), we get a palindrome (67366376).

It can be divided in two parts, 313 and 15063, that added together give a square (15376 = 124²).

The spelling of 31315063 in words is "thirty-one million, three hundred fifteen thousand, sixty-three".