88231999 has 2 divisors, whose sum is σ = 88232000. Its totient is φ = 88231998.

The previous prime is 88231987. The next prime is 88232003. The reversal of 88231999 is 99913288.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88231999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88231919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44115999 + 44116000.

It is an arithmetic number, because the mean of its divisors is an integer number (44116000).

Almost surely, 2^88231999 is an apocalyptic number.

88231999 is a deficient number, since it is larger than the sum of its proper divisors (1).

88231999 is an equidigital number, since it uses as much as digits as its factorization.

88231999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 49.

The square root of 88231999 is about 9393.1889686091. The cubic root of 88231999 is about 445.1865547817.

The spelling of 88231999 in words is "eighty-eight million, two hundred thirty-one thousand, nine hundred ninety-nine".