31477099137 has 32 divisors (see below), whose sum is σ = 45970343424. Its totient is φ = 18999926400.

The previous prime is 31477099127. The next prime is 31477099187. The reversal of 31477099137 is 73199077413.

It is not a de Polignac number, because 31477099137 - 2⁸ = 31477098881 is a prime.

It is a super-2 number, since 2×31477099137² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31477099137.

It is not an unprimeable number, because it can be changed into a prime (31477099127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9402898 + ... + 9406244.

It is an arithmetic number, because the mean of its divisors is an integer number (1436573232).

Almost surely, 2^31477099137 is an apocalyptic number.

It is an amenable number.

31477099137 is a deficient number, since it is larger than the sum of its proper divisors (14493244287).

31477099137 is a wasteful number, since it uses less digits than its factorization.

31477099137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4429.

The product of its (nonzero) digits is 1000188, while the sum is 51.

The spelling of 31477099137 in words is "thirty-one billion, four hundred seventy-seven million, ninety-nine thousand, one hundred thirty-seven".