312243023561 has 8 divisors (see below), whose sum is σ = 359573210304. Its totient is φ = 265593846960.

The previous prime is 312243023503. The next prime is 312243023579. The reversal of 312243023561 is 165320342213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312243023561 - 2²⁶ = 312175914697 is a prime.

It is a super-2 number, since 2×312243023561² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (312243025561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170251550 + ... + 170253383.

It is an arithmetic number, because the mean of its divisors is an integer number (44946651288).

Almost surely, 2^312243023561 is an apocalyptic number.

It is an amenable number.

312243023561 is a deficient number, since it is larger than the sum of its proper divisors (47330186743).

312243023561 is a wasteful number, since it uses less digits than its factorization.

312243023561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340505071.

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 312243023561 its reverse (165320342213), we get a palindrome (477563365774).

The spelling of 312243023561 in words is "three hundred twelve billion, two hundred forty-three million, twenty-three thousand, five hundred sixty-one".