31213313334 has 64 divisors (see below), whose sum is σ = 79347502080. Its totient is φ = 8909585280.

The previous prime is 31213313333. The next prime is 31213313347. The reversal of 31213313334 is 43331331213.

31213313334 is a `hidden beast` number, since 3 + 1 + 2 + 13 + 313 + 334 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 31213313298 and 31213313307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31213313333) 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 31 ways as a sum of consecutive naturals, for example, 362974 + ... + 440654.

It is an arithmetic number, because the mean of its divisors is an integer number (1239804720).

Almost surely, 2^31213313334 is an apocalyptic number.

31213313334 is an abundant number, since it is smaller than the sum of its proper divisors (48134188746).

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

31213313334 is a wasteful number, since it uses less digits than its factorization.

31213313334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78762 (or 78756 counting only the distinct ones).

The product of its digits is 5832, while the sum is 27.

Adding to 31213313334 its reverse (43331331213), we get a palindrome (74544644547).

The spelling of 31213313334 in words is "thirty-one billion, two hundred thirteen million, three hundred thirteen thousand, three hundred thirty-four".