312513145544251 has 2 divisors, whose sum is σ = 312513145544252. Its totient is φ = 312513145544250.

The previous prime is 312513145544213. The next prime is 312513145544309. The reversal of 312513145544251 is 152445541315213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312513145544251 - 2¹⁹ = 312513145019963 is a prime.

It is a super-2 number, since 2×312513145544251² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (312513145542251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156256572772125 + 156256572772126.

It is an arithmetic number, because the mean of its divisors is an integer number (156256572772126).

Almost surely, 2^{312513145544251} is an apocalyptic number.

312513145544251 is a deficient number, since it is larger than the sum of its proper divisors (1).

312513145544251 is an equidigital number, since it uses as much as digits as its factorization.

312513145544251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440000, while the sum is 46.

Adding to 312513145544251 its reverse (152445541315213), we get a palindrome (464958686859464).

The spelling of 312513145544251 in words is "three hundred twelve trillion, five hundred thirteen billion, one hundred forty-five million, five hundred forty-four thousand, two hundred fifty-one".