31203313016 has 16 divisors (see below), whose sum is σ = 58527216240. Its totient is φ = 15596055360.

The previous prime is 31203313013. The next prime is 31203313039. The reversal of 31203313016 is 61031330213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31203312982 and 31203313000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31203313013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 676421 + ... + 721076.

It is an arithmetic number, because the mean of its divisors is an integer number (3657951015).

Almost surely, 2^31203313016 is an apocalyptic number.

It is an amenable number.

31203313016 is a deficient number, since it is larger than the sum of its proper divisors (27323903224).

31203313016 is a wasteful number, since it uses less digits than its factorization.

31203313016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400294 (or 1400290 counting only the distinct ones).

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

Adding to 31203313016 its reverse (61031330213), we get a palindrome (92234643229).

The spelling of 31203313016 in words is "thirty-one billion, two hundred three million, three hundred thirteen thousand, sixteen".