309436795357 has 2 divisors, whose sum is σ = 309436795358. Its totient is φ = 309436795356.

The previous prime is 309436795321. The next prime is 309436795397. The reversal of 309436795357 is 753597634903.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 294956523801 + 14480271556 = 543099^2 + 120334^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-309436795357 is a prime.

It is a super-2 number, since 2×309436795357² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 309436795295 and 309436795304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (309436795397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154718397678 + 154718397679.

It is an arithmetic number, because the mean of its divisors is an integer number (154718397679).

Almost surely, 2^309436795357 is an apocalyptic number.

It is an amenable number.

309436795357 is a deficient number, since it is larger than the sum of its proper divisors (1).

309436795357 is an equidigital number, since it uses as much as digits as its factorization.

309436795357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64297800, while the sum is 61.

The spelling of 309436795357 in words is "three hundred nine billion, four hundred thirty-six million, seven hundred ninety-five thousand, three hundred fifty-seven".