312102030131 has 4 divisors (see below), whose sum is σ = 312217327272. Its totient is φ = 311986732992.

The previous prime is 312102030083. The next prime is 312102030139. The reversal of 312102030131 is 131030201213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131030201213 = 232751 ⋅562963.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312102030131 is a prime.

It is a super-2 number, since 2×312102030131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312102030139) 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, 57644510 + ... + 57649923.

It is an arithmetic number, because the mean of its divisors is an integer number (78054331818).

Almost surely, 2^312102030131 is an apocalyptic number.

312102030131 is a deficient number, since it is larger than the sum of its proper divisors (115297141).

312102030131 is a wasteful number, since it uses less digits than its factorization.

312102030131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115297140.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 312102030131 its reverse (131030201213), we get a palindrome (443132231344).

The spelling of 312102030131 in words is "three hundred twelve billion, one hundred two million, thirty thousand, one hundred thirty-one".