31301020016 has 40 divisors (see below), whose sum is σ = 70023955680. Its totient is φ = 13276422144.

The previous prime is 31301019977. The next prime is 31301020039. The reversal of 31301020016 is 61002010313.

It is a junction number, because it is equal to n+sod(n) for n = 31301019976 and 31301020003.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1429721 + ... + 1451448.

It is an arithmetic number, because the mean of its divisors is an integer number (1750598892).

Almost surely, 2^31301020016 is an apocalyptic number.

It is an amenable number.

31301020016 is an abundant number, since it is smaller than the sum of its proper divisors (38722935664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31301020016 is a wasteful number, since it uses less digits than its factorization.

31301020016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2881281 (or 2881275 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31301020016 its reverse (61002010313), we get a palindrome (92303030329).

The spelling of 31301020016 in words is "thirty-one billion, three hundred one million, twenty thousand, sixteen".