31434343172 has 24 divisors (see below), whose sum is σ = 57020241600. Its totient is φ = 15145002656.

The previous prime is 31434343169. The next prime is 31434343219. The reversal of 31434343172 is 27134343413.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211022 + ... + 327717.

It is an arithmetic number, because the mean of its divisors is an integer number (2375843400).

Almost surely, 2^31434343172 is an apocalyptic number.

It is an amenable number.

31434343172 is a deficient number, since it is larger than the sum of its proper divisors (25585898428).

31434343172 is a wasteful number, since it uses less digits than its factorization.

31434343172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539275 (or 539273 counting only the distinct ones).

The product of its digits is 72576, while the sum is 35.

Adding to 31434343172 its reverse (27134343413), we get a palindrome (58568686585).

The spelling of 31434343172 in words is "thirty-one billion, four hundred thirty-four million, three hundred forty-three thousand, one hundred seventy-two".