312248152813 has 4 divisors (see below), whose sum is σ = 312251803740. Its totient is φ = 312244501888.

The previous prime is 312248152763. The next prime is 312248152819. The reversal of 312248152813 is 318251842213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25709556964 + 286538595849 = 160342^2 + 535293^2 .

It is a cyclic number.

It is not a de Polignac number, because 312248152813 - 2²⁹ = 311711281901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312248152819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1694020 + ... + 1869277.

It is an arithmetic number, because the mean of its divisors is an integer number (78062950935).

Almost surely, 2^312248152813 is an apocalyptic number.

It is an amenable number.

312248152813 is a deficient number, since it is larger than the sum of its proper divisors (3650927).

312248152813 is an equidigital number, since it uses as much as digits as its factorization.

312248152813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3650926.

The product of its digits is 92160, while the sum is 40.

The spelling of 312248152813 in words is "three hundred twelve billion, two hundred forty-eight million, one hundred fifty-two thousand, eight hundred thirteen".