20370323317 has 2 divisors, whose sum is σ = 20370323318. Its totient is φ = 20370323316.

The previous prime is 20370323297. The next prime is 20370323327. The reversal of 20370323317 is 71332307302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20065855716 + 304467601 = 141654^2 + 17449^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20370323317 is a prime.

It is a super-2 number, since 2×20370323317² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20370323327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10185161658 + 10185161659.

It is an arithmetic number, because the mean of its divisors is an integer number (10185161659).

Almost surely, 2^20370323317 is an apocalyptic number.

It is an amenable number.

20370323317 is a deficient number, since it is larger than the sum of its proper divisors (1).

20370323317 is an equidigital number, since it uses as much as digits as its factorization.

20370323317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 31.

The spelling of 20370323317 in words is "twenty billion, three hundred seventy million, three hundred twenty-three thousand, three hundred seventeen".