312030201333131 has 4 divisors (see below), whose sum is σ = 312338227199232. Its totient is φ = 311722175467032.

The previous prime is 312030201333001. The next prime is 312030201333133. The reversal of 312030201333131 is 131333102030213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312030201333131 is a prime.

It is a super-2 number, since 2×312030201333131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312030201333131.

It is not an unprimeable number, because it can be changed into a prime (312030201333133) 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, 154012931531 + ... + 154012933556.

It is an arithmetic number, because the mean of its divisors is an integer number (78084556799808).

Almost surely, 2^{312030201333131} is an apocalyptic number.

312030201333131 is a deficient number, since it is larger than the sum of its proper divisors (308025866101).

312030201333131 is a wasteful number, since it uses less digits than its factorization.

312030201333131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308025866100.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 312030201333131 its reverse (131333102030213), we get a palindrome (443363303363344).

The spelling of 312030201333131 in words is "three hundred twelve trillion, thirty billion, two hundred one million, three hundred thirty-three thousand, one hundred thirty-one".