31434577172 has 6 divisors (see below), whose sum is σ = 55010510058. Its totient is φ = 15717288584.

The previous prime is 31434577117. The next prime is 31434577193. The reversal of 31434577172 is 27177543413.

It can be written as a sum of positive squares in only one way, i.e., 26167591696 + 5266985476 = 161764^2 + 72574^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3929322143 + ... + 3929322150.

It is an arithmetic number, because the mean of its divisors is an integer number (9168418343).

Almost surely, 2^31434577172 is an apocalyptic number.

It is an amenable number.

31434577172 is a deficient number, since it is larger than the sum of its proper divisors (23575932886).

31434577172 is a wasteful number, since it uses less digits than its factorization.

31434577172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7858644297 (or 7858644295 counting only the distinct ones).

The product of its digits is 493920, while the sum is 44.

The spelling of 31434577172 in words is "thirty-one billion, four hundred thirty-four million, five hundred seventy-seven thousand, one hundred seventy-two".