312122030131 has 4 divisors (see below), whose sum is σ = 312636235072. Its totient is φ = 311607825192.

The previous prime is 312122030119. The next prime is 312122030137. The reversal of 312122030131 is 131030221213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131030221213 = 59 ⋅2220851207.

It is a cyclic number.

It is not a de Polignac number, because 312122030131 - 2²³ = 312113641523 is a prime.

It is a super-2 number, since 2×312122030131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312122030099 and 312122030108.

It is not an unprimeable number, because it can be changed into a prime (312122030137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257101560 + ... + 257102773.

It is an arithmetic number, because the mean of its divisors is an integer number (78159058768).

Almost surely, 2^312122030131 is an apocalyptic number.

312122030131 is a deficient number, since it is larger than the sum of its proper divisors (514204941).

312122030131 is an equidigital number, since it uses as much as digits as its factorization.

312122030131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514204940.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 312122030131 its reverse (131030221213), we get a palindrome (443152251344).

The spelling of 312122030131 in words is "three hundred twelve billion, one hundred twenty-two million, thirty thousand, one hundred thirty-one".