31987492119 has 36 divisors (see below), whose sum is σ = 50940392776. Its totient is φ = 19327572000.

The previous prime is 31987492109. The next prime is 31987492127. The reversal of 31987492119 is 91129478913.

31987492119 is a `hidden beast` number, since 31 + 9 + 8 + 7 + 492 + 119 = 666.

It is not a de Polignac number, because 31987492119 - 2⁸ = 31987491863 is a prime.

It is a super-2 number, since 2×31987492119² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31987492109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 316089 + ... + 404829.

Almost surely, 2^31987492119 is an apocalyptic number.

31987492119 is a deficient number, since it is larger than the sum of its proper divisors (18952900657).

31987492119 is a wasteful number, since it uses less digits than its factorization.

31987492119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89100 (or 89086 counting only the distinct ones).

The product of its digits is 979776, while the sum is 54.

The spelling of 31987492119 in words is "thirty-one billion, nine hundred eighty-seven million, four hundred ninety-two thousand, one hundred nineteen".