2315445971 has 2 divisors, whose sum is σ = 2315445972. Its totient is φ = 2315445970.

The previous prime is 2315445959. The next prime is 2315446031. The reversal of 2315445971 is 1795445132.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2315445971 is a prime.

It is a super-2 number, since 2×2315445971² = 10722580089240265682, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2315445571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1157722985 + 1157722986.

It is an arithmetic number, because the mean of its divisors is an integer number (1157722986).

Almost surely, 2^2315445971 is an apocalyptic number.

2315445971 is a deficient number, since it is larger than the sum of its proper divisors (1).

2315445971 is an equidigital number, since it uses as much as digits as its factorization.

2315445971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 41.

The square root of 2315445971 is about 48119.0811529065. The cubic root of 2315445971 is about 1322.9544268072.

The spelling of 2315445971 in words is "two billion, three hundred fifteen million, four hundred forty-five thousand, nine hundred seventy-one".