99377231 has 2 divisors, whose sum is σ = 99377232. Its totient is φ = 99377230.

The previous prime is 99377221. The next prime is 99377237. The reversal of 99377231 is 13277399.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99377231 - 2⁶ = 99377167 is a prime.

It is a super-2 number, since 2×99377231² = 19751668082454722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99377237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49688615 + 49688616.

It is an arithmetic number, because the mean of its divisors is an integer number (49688616).

Almost surely, 2^99377231 is an apocalyptic number.

99377231 is a deficient number, since it is larger than the sum of its proper divisors (1).

99377231 is an equidigital number, since it uses as much as digits as its factorization.

99377231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71442, while the sum is 41.

The square root of 99377231 is about 9968.8129182967. The cubic root of 99377231 is about 463.1933303115.

The spelling of 99377231 in words is "ninety-nine million, three hundred seventy-seven thousand, two hundred thirty-one".