31348568464 has 80 divisors (see below), whose sum is σ = 66089658880. Its totient is φ = 14350141440.

The previous prime is 31348568453. The next prime is 31348568467. The reversal of 31348568464 is 46486584313.

It is not an unprimeable number, because it can be changed into a prime (31348568467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8262952 + ... + 8266744.

It is an arithmetic number, because the mean of its divisors is an integer number (826120736).

Almost surely, 2^31348568464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31348568464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33044829440).

31348568464 is an abundant number, since it is smaller than the sum of its proper divisors (34741090416).

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

31348568464 is a wasteful number, since it uses less digits than its factorization.

31348568464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4728 (or 4722 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 52.

The spelling of 31348568464 in words is "thirty-one billion, three hundred forty-eight million, five hundred sixty-eight thousand, four hundred sixty-four".