312133121334113 has 4 divisors (see below), whose sum is σ = 312133281056148. Its totient is φ = 312132961612080.

The previous prime is 312133121334091. The next prime is 312133121334197. The reversal of 312133121334113 is 311433121331213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 292707170863969 + 19425950470144 = 17108687^2 + 4407488^2 .

It is a cyclic number.

It is not a de Polignac number, because 312133121334113 - 2⁶ = 312133121334049 is a prime.

It is a super-2 number, since 2×312133121334113² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 312133121334113.

It is not an unprimeable number, because it can be changed into a prime (312133121334613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76892906 + ... + 80850387.

It is an arithmetic number, because the mean of its divisors is an integer number (78033320264037).

Almost surely, 2^{312133121334113} is an apocalyptic number.

It is an amenable number.

312133121334113 is a deficient number, since it is larger than the sum of its proper divisors (159722035).

312133121334113 is a wasteful number, since it uses less digits than its factorization.

312133121334113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159722034.

The product of its digits is 11664, while the sum is 32.

Adding to 312133121334113 its reverse (311433121331213), we get a palindrome (623566242665326).

The spelling of 312133121334113 in words is "three hundred twelve trillion, one hundred thirty-three billion, one hundred twenty-one million, three hundred thirty-four thousand, one hundred thirteen".