312020599109 has 2 divisors, whose sum is σ = 312020599110. Its totient is φ = 312020599108.

The previous prime is 312020599057. The next prime is 312020599117. The reversal of 312020599109 is 901995020213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 264970651009 + 47049948100 = 514753^2 + 216910^2 .

It is a cyclic number.

It is not a de Polignac number, because 312020599109 - 2³² = 307725631813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312020599199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156010299554 + 156010299555.

It is an arithmetic number, because the mean of its divisors is an integer number (156010299555).

Almost surely, 2^312020599109 is an apocalyptic number.

It is an amenable number.

312020599109 is a deficient number, since it is larger than the sum of its proper divisors (1).

312020599109 is an equidigital number, since it uses as much as digits as its factorization.

312020599109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43740, while the sum is 41.

The spelling of 312020599109 in words is "three hundred twelve billion, twenty million, five hundred ninety-nine thousand, one hundred nine".