99230731 has 2 divisors, whose sum is σ = 99230732. Its totient is φ = 99230730.

The previous prime is 99230693. The next prime is 99230737. The reversal of 99230731 is 13703299.

It is a strong prime.

It is an emirp because it is prime and its reverse (13703299) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99230731 - 2¹¹ = 99228683 is a prime.

It is a super-2 number, since 2×99230731² = 19693475949588722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99230737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49615365 + 49615366.

It is an arithmetic number, because the mean of its divisors is an integer number (49615366).

Almost surely, 2^99230731 is an apocalyptic number.

99230731 is a deficient number, since it is larger than the sum of its proper divisors (1).

99230731 is an equidigital number, since it uses as much as digits as its factorization.

99230731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 99230731 is about 9961.4622922541. The cubic root of 99230731 is about 462.9656081447.

The spelling of 99230731 in words is "ninety-nine million, two hundred thirty thousand, seven hundred thirty-one".