31316063 has 4 divisors (see below), whose sum is σ = 31330968. Its totient is φ = 31301160.

The previous prime is 31316039. The next prime is 31316069. The reversal of 31316063 is 36061313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31316063 - 2²⁴ = 14538847 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 (31316069) 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 3 ways as a sum of consecutive naturals, for example, 3656 + ... + 8717.

It is an arithmetic number, because the mean of its divisors is an integer number (7832742).

Almost surely, 2^31316063 is an apocalyptic number.

31316063 is a deficient number, since it is larger than the sum of its proper divisors (14905).

31316063 is a wasteful number, since it uses less digits than its factorization.

31316063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14904.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 31316063 is about 5596.0756785447. The cubic root of 31316063 is about 315.2020640212.

Adding to 31316063 its reverse (36061313), we get a palindrome (67377376).

The spelling of 31316063 in words is "thirty-one million, three hundred sixteen thousand, sixty-three".