313142213749 has 2 divisors, whose sum is σ = 313142213750. Its totient is φ = 313142213748.

The previous prime is 313142213737. The next prime is 313142213753. The reversal of 313142213749 is 947312241313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172708398724 + 140433815025 = 415582^2 + 374745^2 .

It is a cyclic number.

It is not a de Polignac number, because 313142213749 - 2¹³ = 313142205557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313142213779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156571106874 + 156571106875.

It is an arithmetic number, because the mean of its divisors is an integer number (156571106875).

Almost surely, 2^313142213749 is an apocalyptic number.

It is an amenable number.

313142213749 is a deficient number, since it is larger than the sum of its proper divisors (1).

313142213749 is an equidigital number, since it uses as much as digits as its factorization.

313142213749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 40.

The spelling of 313142213749 in words is "three hundred thirteen billion, one hundred forty-two million, two hundred thirteen thousand, seven hundred forty-nine".