31300100312 has 16 divisors (see below), whose sum is σ = 63202125840. Its totient is φ = 14446200096.

The previous prime is 31300100303. The next prime is 31300100317. The reversal of 31300100312 is 21300100313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31300100317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150481148 + ... + 150481355.

It is an arithmetic number, because the mean of its divisors is an integer number (3950132865).

Almost surely, 2^31300100312 is an apocalyptic number.

It is an amenable number.

31300100312 is an abundant number, since it is smaller than the sum of its proper divisors (31902025528).

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

31300100312 is a wasteful number, since it uses less digits than its factorization.

31300100312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300962522 (or 300962518 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 31300100312 its reverse (21300100313), we get a palindrome (52600200625).

Subtracting from 31300100312 its reverse (21300100313), we obtain a palindrome (9999999999).

The spelling of 31300100312 in words is "thirty-one billion, three hundred million, one hundred thousand, three hundred twelve".