31275520223 has 2 divisors, whose sum is σ = 31275520224. Its totient is φ = 31275520222.

The previous prime is 31275520193. The next prime is 31275520229. The reversal of 31275520223 is 32202557213.

It is a strong prime.

It is an emirp because it is prime and its reverse (32202557213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31275520223 - 2¹⁴ = 31275503839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31275520223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31275520229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15637760111 + 15637760112.

It is an arithmetic number, because the mean of its divisors is an integer number (15637760112).

Almost surely, 2^31275520223 is an apocalyptic number.

31275520223 is a deficient number, since it is larger than the sum of its proper divisors (1).

31275520223 is an equidigital number, since it uses as much as digits as its factorization.

31275520223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 32.

The spelling of 31275520223 in words is "thirty-one billion, two hundred seventy-five million, five hundred twenty thousand, two hundred twenty-three".