31263103216 has 40 divisors (see below), whose sum is σ = 63150444720. Its totient is φ = 14979933696.

The previous prime is 31263103213. The next prime is 31263103217. The reversal of 31263103216 is 61230136213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31263103213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392221 + ... + 465148.

It is an arithmetic number, because the mean of its divisors is an integer number (1578761118).

Almost surely, 2^31263103216 is an apocalyptic number.

It is an amenable number.

31263103216 is an abundant number, since it is smaller than the sum of its proper divisors (31887341504).

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

31263103216 is a wasteful number, since it uses less digits than its factorization.

31263103216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857473 (or 857467 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 31263103216 its reverse (61230136213), we get a palindrome (92493239429).

The spelling of 31263103216 in words is "thirty-one billion, two hundred sixty-three million, one hundred three thousand, two hundred sixteen".