90651031223 has 2 divisors, whose sum is σ = 90651031224. Its totient is φ = 90651031222.

The previous prime is 90651031199. The next prime is 90651031249. The reversal of 90651031223 is 32213015609.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90651031223 - 2²⁸ = 90382595767 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90651031223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90651039223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45325515611 + 45325515612.

It is an arithmetic number, because the mean of its divisors is an integer number (45325515612).

Almost surely, 2^90651031223 is an apocalyptic number.

90651031223 is a deficient number, since it is larger than the sum of its proper divisors (1).

90651031223 is an equidigital number, since it uses as much as digits as its factorization.

90651031223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The spelling of 90651031223 in words is "ninety billion, six hundred fifty-one million, thirty-one thousand, two hundred twenty-three".