312855823949 has 2 divisors, whose sum is σ = 312855823950. Its totient is φ = 312855823948.

The previous prime is 312855823927. The next prime is 312855824053. The reversal of 312855823949 is 949328558213.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 299298714724 + 13557109225 = 547082^2 + 116435^2 .

It is a cyclic number.

It is not a de Polignac number, because 312855823949 - 2¹² = 312855819853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312855823249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156427911974 + 156427911975.

It is an arithmetic number, because the mean of its divisors is an integer number (156427911975).

Almost surely, 2^312855823949 is an apocalyptic number.

It is an amenable number.

312855823949 is a deficient number, since it is larger than the sum of its proper divisors (1).

312855823949 is an equidigital number, since it uses as much as digits as its factorization.

312855823949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18662400, while the sum is 59.

The spelling of 312855823949 in words is "three hundred twelve billion, eight hundred fifty-five million, eight hundred twenty-three thousand, nine hundred forty-nine".