312231660905 has 16 divisors (see below), whose sum is σ = 377779943424. Its totient is φ = 247718943360.

The previous prime is 312231660887. The next prime is 312231660907. The reversal of 312231660905 is 509066132213.

It is not a de Polignac number, because 312231660905 - 2¹⁶ = 312231595369 is a prime.

It is a super-2 number, since 2×312231660905² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312231660907) 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, 1503314 + ... + 1698356.

It is an arithmetic number, because the mean of its divisors is an integer number (23611246464).

Almost surely, 2^312231660905 is an apocalyptic number.

It is an amenable number.

312231660905 is a deficient number, since it is larger than the sum of its proper divisors (65548282519).

312231660905 is a wasteful number, since it uses less digits than its factorization.

312231660905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197696.

The product of its (nonzero) digits is 58320, while the sum is 38.

The spelling of 312231660905 in words is "three hundred twelve billion, two hundred thirty-one million, six hundred sixty thousand, nine hundred five".