31400116551 has 12 divisors (see below), whose sum is σ = 45359847000. Its totient is φ = 20931508080.

The previous prime is 31400116519. The next prime is 31400116591. The reversal of 31400116551 is 15561100413.

31400116551 is a `hidden beast` number, since 3 + 1 + 4 + 0 + 0 + 1 + 1 + 655 + 1 = 666.

It is not a de Polignac number, because 31400116551 - 2⁵ = 31400116519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31400116591) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50176 + ... + 255573.

It is an arithmetic number, because the mean of its divisors is an integer number (3779987250).

Almost surely, 2^31400116551 is an apocalyptic number.

31400116551 is a deficient number, since it is larger than the sum of its proper divisors (13959730449).

31400116551 is a wasteful number, since it uses less digits than its factorization.

31400116551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317166 (or 317163 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 31400116551 its reverse (15561100413), we get a palindrome (46961216964).

The spelling of 31400116551 in words is "thirty-one billion, four hundred million, one hundred sixteen thousand, five hundred fifty-one".