231212123312 has 20 divisors (see below), whose sum is σ = 474324871176. Its totient is φ = 108805704960.

The previous prime is 231212123293. The next prime is 231212123323. The reversal of 231212123312 is 213321212132.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425022014 + ... + 425022557.

Almost surely, 2^231212123312 is an apocalyptic number.

It is an amenable number.

231212123312 is an abundant number, since it is smaller than the sum of its proper divisors (243112747864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231212123312 is a wasteful number, since it uses less digits than its factorization.

231212123312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850044596 (or 850044590 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

Adding to 231212123312 its reverse (213321212132), we get a palindrome (444533335444).

The spelling of 231212123312 in words is "two hundred thirty-one billion, two hundred twelve million, one hundred twenty-three thousand, three hundred twelve".