31443070418 has 8 divisors (see below), whose sum is σ = 48439324812. Its totient is φ = 15296628816.

The previous prime is 31443070363. The next prime is 31443070433. The reversal of 31443070418 is 81407034413.

It can be written as a sum of positive squares in 2 ways, for example, as 31356263929 + 86806489 = 177077^2 + 9317^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×31443070418² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212453105 + ... + 212453252.

Almost surely, 2^31443070418 is an apocalyptic number.

31443070418 is a deficient number, since it is larger than the sum of its proper divisors (16996254394).

31443070418 is a wasteful number, since it uses less digits than its factorization.

31443070418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424906396.

The product of its (nonzero) digits is 32256, while the sum is 35.

The spelling of 31443070418 in words is "thirty-one billion, four hundred forty-three million, seventy thousand, four hundred eighteen".