31948940263 has 2 divisors, whose sum is σ = 31948940264. Its totient is φ = 31948940262.

The previous prime is 31948940239. The next prime is 31948940269. The reversal of 31948940263 is 36204984913.

It is a strong prime.

It is an emirp because it is prime and its reverse (36204984913) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31948940263 - 2²¹ = 31946843111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31948940269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15974470131 + 15974470132.

It is an arithmetic number, because the mean of its divisors is an integer number (15974470132).

Almost surely, 2^31948940263 is an apocalyptic number.

31948940263 is a deficient number, since it is larger than the sum of its proper divisors (1).

31948940263 is an equidigital number, since it uses as much as digits as its factorization.

31948940263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1119744, while the sum is 49.

The spelling of 31948940263 in words is "thirty-one billion, nine hundred forty-eight million, nine hundred forty thousand, two hundred sixty-three".