31514380919 has 6 divisors (see below), whose sum is σ = 36659586024. Its totient is φ = 27012326460.

The previous prime is 31514380907. The next prime is 31514380943. The reversal of 31514380919 is 91908341513.

It is not a de Polignac number, because 31514380919 - 2⁴ = 31514380903 is a prime.

It is a super-2 number, since 2×31514380919² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31514380919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31514380019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 321575267 + ... + 321575364.

It is an arithmetic number, because the mean of its divisors is an integer number (6109931004).

Almost surely, 2^31514380919 is an apocalyptic number.

31514380919 is a deficient number, since it is larger than the sum of its proper divisors (5145205105).

31514380919 is an equidigital number, since it uses as much as digits as its factorization.

31514380919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643150645 (or 643150638 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 44.

The spelling of 31514380919 in words is "thirty-one billion, five hundred fourteen million, three hundred eighty thousand, nine hundred nineteen".