31219494367 has 12 divisors (see below), whose sum is σ = 32301822880. Its totient is φ = 30168305856.

The previous prime is 31219494349. The next prime is 31219494391. The reversal of 31219494367 is 76349491213.

It is not a de Polignac number, because 31219494367 - 2¹¹ = 31219492319 is a prime.

It is a super-2 number, since 2×31219494367² (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 31219494367.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31219494347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85063 + ... + 263959.

Almost surely, 2^31219494367 is an apocalyptic number.

31219494367 is a deficient number, since it is larger than the sum of its proper divisors (1082328513).

31219494367 is an equidigital number, since it uses as much as digits as its factorization.

31219494367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179070 (or 179023 counting only the distinct ones).

The product of its digits is 979776, while the sum is 49.

The spelling of 31219494367 in words is "thirty-one billion, two hundred nineteen million, four hundred ninety-four thousand, three hundred sixty-seven".