312204100212131 has 2 divisors, whose sum is σ = 312204100212132. Its totient is φ = 312204100212130.

The previous prime is 312204100212119. The next prime is 312204100212211. The reversal of 312204100212131 is 131212001402213.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312204100212131 is a prime.

It is a super-2 number, since 2×312204100212131² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312204100212097 and 312204100212106.

It is not a weakly prime, because it can be changed into another prime (312204100214131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156102050106065 + 156102050106066.

It is an arithmetic number, because the mean of its divisors is an integer number (156102050106066).

Almost surely, 2^{312204100212131} is an apocalyptic number.

312204100212131 is a deficient number, since it is larger than the sum of its proper divisors (1).

312204100212131 is an equidigital number, since it uses as much as digits as its factorization.

312204100212131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 312204100212131 its reverse (131212001402213), we get a palindrome (443416101614344).

The spelling of 312204100212131 in words is "three hundred twelve trillion, two hundred four billion, one hundred million, two hundred twelve thousand, one hundred thirty-one".