31043159394 has 32 divisors (see below), whose sum is σ = 67262590080. Its totient is φ = 9494541312.

The previous prime is 31043159393. The next prime is 31043159447. The reversal of 31043159394 is 49395134013.

It is a super-2 number, since 2×31043159394² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31043159393) 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, 1178559 + ... + 1204610.

It is an arithmetic number, because the mean of its divisors is an integer number (2101955940).

Almost surely, 2^31043159394 is an apocalyptic number.

31043159394 is an abundant number, since it is smaller than the sum of its proper divisors (36219430686).

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

31043159394 is a wasteful number, since it uses less digits than its factorization.

31043159394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2383354.

The product of its (nonzero) digits is 174960, while the sum is 42.

The spelling of 31043159394 in words is "thirty-one billion, forty-three million, one hundred fifty-nine thousand, three hundred ninety-four".