2315947 has 2 divisors, whose sum is σ = 2315948. Its totient is φ = 2315946.

The previous prime is 2315903. The next prime is 2315953. The reversal of 2315947 is 7495132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2315947 is a prime.

It is a super-2 number, since 2×2315947² = 10727221013618, which contains 22 as substring.

2315947 is a lucky number.

It is a plaindrome in base 16.

It is not a weakly prime, because it can be changed into another prime (2315347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1157973 + 1157974.

It is an arithmetic number, because the mean of its divisors is an integer number (1157974).

2^2315947 is an apocalyptic number.

2315947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2315947 is an equidigital number, since it uses as much as digits as its factorization.

2315947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 31.

The square root of 2315947 is about 1521.8235771600. The cubic root of 2315947 is about 132.3049842656.

The spelling of 2315947 in words is "two million, three hundred fifteen thousand, nine hundred forty-seven".