312302021223 has 16 divisors (see below), whose sum is σ = 423546076800. Its totient is φ = 204631085280.

The previous prime is 312302021149. The next prime is 312302021249. The reversal of 312302021223 is 322120203213.

It is a happy number.

It is not a de Polignac number, because 312302021223 - 2⁸ = 312302020967 is a prime.

It is a super-2 number, since 2×312302021223² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 312302021223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312302021923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 710893 + ... + 1063001.

It is an arithmetic number, because the mean of its divisors is an integer number (26471629800).

Almost surely, 2^312302021223 is an apocalyptic number.

312302021223 is a deficient number, since it is larger than the sum of its proper divisors (111244055577).

312302021223 is a wasteful number, since it uses less digits than its factorization.

312302021223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357182.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 312302021223 its reverse (322120203213), we get a palindrome (634422224436).

The spelling of 312302021223 in words is "three hundred twelve billion, three hundred two million, twenty-one thousand, two hundred twenty-three".