148231999 has 2 divisors, whose sum is σ = 148232000. Its totient is φ = 148231998.

The previous prime is 148231981. The next prime is 148232017. The reversal of 148231999 is 999132841.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (148231981) and next prime (148232017).

It is a cyclic number.

It is not a de Polignac number, because 148231999 - 2¹⁵ = 148199231 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148231949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74115999 + 74116000.

It is an arithmetic number, because the mean of its divisors is an integer number (74116000).

Almost surely, 2^148231999 is an apocalyptic number.

148231999 is a deficient number, since it is larger than the sum of its proper divisors (1).

148231999 is an equidigital number, since it uses as much as digits as its factorization.

148231999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 46.

The square root of 148231999 is about 12175.0564269740. The cubic root of 148231999 is about 529.2334938590.

The spelling of 148231999 in words is "one hundred forty-eight million, two hundred thirty-one thousand, nine hundred ninety-nine".