31215460166223 has 24 divisors (see below), whose sum is σ = 44123444725248. Its totient is φ = 19626619126608.

The previous prime is 31215460166207. The next prime is 31215460166311. The reversal of 31215460166223 is 32266106451213.

It is not a de Polignac number, because 31215460166223 - 2⁴ = 31215460166207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31215460166123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64384365 + ... + 64867382.

It is an arithmetic number, because the mean of its divisors is an integer number (1838476863552).

Almost surely, 2^{31215460166223} is an apocalyptic number.

31215460166223 is a deficient number, since it is larger than the sum of its proper divisors (12907984559025).

31215460166223 is a wasteful number, since it uses less digits than its factorization.

31215460166223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129252011 (or 129251992 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 31215460166223 in words is "thirty-one trillion, two hundred fifteen billion, four hundred sixty million, one hundred sixty-six thousand, two hundred twenty-three".