31963349339 has 4 divisors (see below), whose sum is σ = 32566431456. Its totient is φ = 31360267224.

The previous prime is 31963349329. The next prime is 31963349347. The reversal of 31963349339 is 93394336913.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93394336913 = 73477 ⋅1271069.

It is a cyclic number.

It is not a de Polignac number, because 31963349339 - 2⁸ = 31963349083 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53), and also a Moran number because the ratio is a prime number: 603082063 = 31963349339 / (3 + 1 + 9 + 6 + 3 + 3 + 4 + 9 + 3 + 3 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31963349309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301540979 + ... + 301541084.

It is an arithmetic number, because the mean of its divisors is an integer number (8141607864).

Almost surely, 2^31963349339 is an apocalyptic number.

31963349339 is a deficient number, since it is larger than the sum of its proper divisors (603082117).

31963349339 is an equidigital number, since it uses as much as digits as its factorization.

31963349339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603082116.

The product of its digits is 4251528, while the sum is 53.

The spelling of 31963349339 in words is "thirty-one billion, nine hundred sixty-three million, three hundred forty-nine thousand, three hundred thirty-nine".