31363012 has 12 divisors (see below), whose sum is σ = 55024956. Its totient is φ = 15641600.

The previous prime is 31363009. The next prime is 31363027. The reversal of 31363012 is 21036313.

It can be written as a sum of positive squares in 2 ways, for example, as 29419776 + 1943236 = 5424^2 + 1394^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8173 + ... + 11380.

It is an arithmetic number, because the mean of its divisors is an integer number (4585413).

Almost surely, 2^31363012 is an apocalyptic number.

It is an amenable number.

31363012 is a deficient number, since it is larger than the sum of its proper divisors (23661944).

31363012 is a wasteful number, since it uses less digits than its factorization.

31363012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19958 (or 19956 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 31363012 is about 5600.2689221144. The cubic root of 31363012 is about 315.3595022088.

Adding to 31363012 its reverse (21036313), we get a palindrome (52399325).

The spelling of 31363012 in words is "thirty-one million, three hundred sixty-three thousand, twelve".