31313463 has 16 divisors (see below), whose sum is σ = 45024000. Its totient is φ = 19293120.

The previous prime is 31313453. The next prime is 31313479. The reversal of 31313463 is 36431313.

It is not a de Polignac number, because 31313463 - 2⁸ = 31313207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31313453) 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, 4363 + ... + 9036.

It is an arithmetic number, because the mean of its divisors is an integer number (2814000).

Almost surely, 2^31313463 is an apocalyptic number.

31313463 is a deficient number, since it is larger than the sum of its proper divisors (13710537).

31313463 is a wasteful number, since it uses less digits than its factorization.

31313463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13462.

The product of its digits is 1944, while the sum is 24.

The square root of 31313463 is about 5595.8433680724. The cubic root of 31313463 is about 315.1933406168.

Adding to 31313463 its reverse (36431313), we get a palindrome (67744776).

The spelling of 31313463 in words is "thirty-one million, three hundred thirteen thousand, four hundred sixty-three".