31442718401 has 16 divisors (see below), whose sum is σ = 32744250000. Its totient is φ = 30156354816.

The previous prime is 31442718397. The next prime is 31442718403. The reversal of 31442718401 is 10481724413.

It can be written as a sum of positive squares in 8 ways, for example, as 904806400 + 30537912001 = 30080^2 + 174751^2 .

It is not a de Polignac number, because 31442718401 - 2² = 31442718397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31442718403) 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, 2716775 + ... + 2728323.

It is an arithmetic number, because the mean of its divisors is an integer number (2046515625).

Almost surely, 2^31442718401 is an apocalyptic number.

It is an amenable number.

31442718401 is a deficient number, since it is larger than the sum of its proper divisors (1301531599).

31442718401 is a wasteful number, since it uses less digits than its factorization.

31442718401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12196.

The product of its (nonzero) digits is 21504, while the sum is 35.

The spelling of 31442718401 in words is "thirty-one billion, four hundred forty-two million, seven hundred eighteen thousand, four hundred one".