312031120121213 has 8 divisors (see below), whose sum is σ = 318751560771840. Its totient is φ = 305314074497680.

The previous prime is 312031120121113. The next prime is 312031120121221. The reversal of 312031120121213 is 312121021130213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312031120121213 - 2¹⁰ = 312031120120189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312031120121113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 848570978 + ... + 848938611.

It is an arithmetic number, because the mean of its divisors is an integer number (39843945096480).

Almost surely, 2^{312031120121213} is an apocalyptic number.

It is an amenable number.

312031120121213 is a deficient number, since it is larger than the sum of its proper divisors (6720440650627).

312031120121213 is a wasteful number, since it uses less digits than its factorization.

312031120121213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697513547.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 312031120121213 its reverse (312121021130213), we get a palindrome (624152141251426).

The spelling of 312031120121213 in words is "three hundred twelve trillion, thirty-one billion, one hundred twenty million, one hundred twenty-one thousand, two hundred thirteen".