2315620997 has 2 divisors, whose sum is σ = 2315620998. Its totient is φ = 2315620996.

The previous prime is 2315620943. The next prime is 2315621003. The reversal of 2315620997 is 7990265132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1989962881 + 325658116 = 44609^2 + 18046^2 .

It is a cyclic number.

It is not a de Polignac number, because 2315620997 - 2¹⁰ = 2315619973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2315622997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1157810498 + 1157810499.

It is an arithmetic number, because the mean of its divisors is an integer number (1157810499).

Almost surely, 2^2315620997 is an apocalyptic number.

It is an amenable number.

2315620997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2315620997 is an equidigital number, since it uses as much as digits as its factorization.

2315620997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 2315620997 is about 48120.8997941643. The cubic root of 2315620997 is about 1322.9877602830.

The spelling of 2315620997 in words is "two billion, three hundred fifteen million, six hundred twenty thousand, nine hundred ninety-seven".