31645035319 has 2 divisors, whose sum is σ = 31645035320. Its totient is φ = 31645035318.

The previous prime is 31645035313. The next prime is 31645035343. The reversal of 31645035319 is 91353054613.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31645035319 - 2³ = 31645035311 is a prime.

It is a super-2 number, since 2×31645035319² (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 (31645035311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15822517659 + 15822517660.

It is an arithmetic number, because the mean of its divisors is an integer number (15822517660).

Almost surely, 2^31645035319 is an apocalyptic number.

31645035319 is a deficient number, since it is larger than the sum of its proper divisors (1).

31645035319 is an equidigital number, since it uses as much as digits as its factorization.

31645035319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145800, while the sum is 40.

The spelling of 31645035319 in words is "thirty-one billion, six hundred forty-five million, thirty-five thousand, three hundred nineteen".