31042864384722 has 24 divisors (see below), whose sum is σ = 67259714234076. Its totient is φ = 10347594579456.

The previous prime is 31042864384699. The next prime is 31042864384729. The reversal of 31042864384722 is 22748346824013.

31042864384722 is a `hidden beast` number, since 3 + 10 + 42 + 86 + 43 + 8 + 472 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26718964183521 + 4323900201201 = 5169039^2 + 2079399^2 .

It is not an unprimeable number, because it can be changed into a prime (31042864384729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5627818 + ... + 9682874.

Almost surely, 2^{31042864384722} is an apocalyptic number.

31042864384722 is an abundant number, since it is smaller than the sum of its proper divisors (36216849849354).

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

31042864384722 is a wasteful number, since it uses less digits than its factorization.

31042864384722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4480362 (or 4480359 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 54.

The spelling of 31042864384722 in words is "thirty-one trillion, forty-two billion, eight hundred sixty-four million, three hundred eighty-four thousand, seven hundred twenty-two".