31680440119 has 2 divisors, whose sum is σ = 31680440120. Its totient is φ = 31680440118.

The previous prime is 31680440093. The next prime is 31680440131. The reversal of 31680440119 is 91104408613.

It is a strong prime.

It is an emirp because it is prime and its reverse (91104408613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31680440119 - 2⁵ = 31680440087 is a prime.

It is a super-2 number, since 2×31680440119² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31680440719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15840220059 + 15840220060.

It is an arithmetic number, because the mean of its divisors is an integer number (15840220060).

Almost surely, 2^31680440119 is an apocalyptic number.

31680440119 is a deficient number, since it is larger than the sum of its proper divisors (1).

31680440119 is an equidigital number, since it uses as much as digits as its factorization.

31680440119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 31680440119 in words is "thirty-one billion, six hundred eighty million, four hundred forty thousand, one hundred nineteen".