312211312998 has 32 divisors (see below), whose sum is σ = 673545118176. Its totient is φ = 95909307648.

The previous prime is 312211312997. The next prime is 312211313039. The reversal of 312211312998 is 899213112213.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312211312997) 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, 3195561 + ... + 3291812.

It is an arithmetic number, because the mean of its divisors is an integer number (21048284943).

Almost surely, 2^312211312998 is an apocalyptic number.

312211312998 is an abundant number, since it is smaller than the sum of its proper divisors (361333805178).

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

312211312998 is a wasteful number, since it uses less digits than its factorization.

312211312998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6488008.

The product of its digits is 46656, while the sum is 42.

The spelling of 312211312998 in words is "three hundred twelve billion, two hundred eleven million, three hundred twelve thousand, nine hundred ninety-eight".