312123202011231 has 32 divisors (see below), whose sum is σ = 455246784373248. Its totient is φ = 189068736055680.

The previous prime is 312123202011161. The next prime is 312123202011241. The reversal of 312123202011231 is 132110202321213.

It is not a de Polignac number, because 312123202011231 - 2¹⁵ = 312123201978463 is a prime.

It is a super-2 number, since 2×312123202011231² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312123202011241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 237548275 + ... + 238858596.

It is an arithmetic number, because the mean of its divisors is an integer number (14226462011664).

Almost surely, 2^{312123202011231} is an apocalyptic number.

312123202011231 is a deficient number, since it is larger than the sum of its proper divisors (143123582362017).

312123202011231 is a wasteful number, since it uses less digits than its factorization.

312123202011231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476407151.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 312123202011231 its reverse (132110202321213), we get a palindrome (444233404332444).

The spelling of 312123202011231 in words is "three hundred twelve trillion, one hundred twenty-three billion, two hundred two million, eleven thousand, two hundred thirty-one".