31431340055 has 8 divisors (see below), whose sum is σ = 37721414400. Its totient is φ = 25142534496.

The previous prime is 31431340027. The next prime is 31431340081. The reversal of 31431340055 is 55004313413.

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

It is a cyclic number.

It is not a de Polignac number, because 31431340055 - 2³⁰ = 30357598231 is a prime.

It is a congruent 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, 261815 + ... + 362504.

It is an arithmetic number, because the mean of its divisors is an integer number (4715176800).

Almost surely, 2^31431340055 is an apocalyptic number.

31431340055 is a deficient number, since it is larger than the sum of its proper divisors (6290074345).

31431340055 is a wasteful number, since it uses less digits than its factorization.

31431340055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634393.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 31431340055 its reverse (55004313413), we get a palindrome (86435653468).

The spelling of 31431340055 in words is "thirty-one billion, four hundred thirty-one million, three hundred forty thousand, fifty-five".