2531523899 has 2 divisors, whose sum is σ = 2531523900. Its totient is φ = 2531523898.

The previous prime is 2531523889. The next prime is 2531523937. The reversal of 2531523899 is 9983251352.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2531523899 is a prime.

It is a super-2 number, since 2×2531523899² = 12817226502416324402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2531523859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1265761949 + 1265761950.

It is an arithmetic number, because the mean of its divisors is an integer number (1265761950).

Almost surely, 2^2531523899 is an apocalyptic number.

2531523899 is a deficient number, since it is larger than the sum of its proper divisors (1).

2531523899 is an equidigital number, since it uses as much as digits as its factorization.

2531523899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 47.

The square root of 2531523899 is about 50314.2514502601. The cubic root of 2531523899 is about 1362.8895991488.

The spelling of 2531523899 in words is "two billion, five hundred thirty-one million, five hundred twenty-three thousand, eight hundred ninety-nine".