148331231 has 2 divisors, whose sum is σ = 148331232. Its totient is φ = 148331230.

The previous prime is 148331221. The next prime is 148331279. The reversal of 148331231 is 132133841.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 148331231 - 2⁶ = 148331167 is a prime.

It is a super-2 number, since 2×148331231² = 44004308179950722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 148331231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148331221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74165615 + 74165616.

It is an arithmetic number, because the mean of its divisors is an integer number (74165616).

Almost surely, 2^148331231 is an apocalyptic number.

148331231 is a deficient number, since it is larger than the sum of its proper divisors (1).

148331231 is an equidigital number, since it uses as much as digits as its factorization.

148331231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 26.

The square root of 148331231 is about 12179.1309624291. The cubic root of 148331231 is about 529.3515636952.

The spelling of 148331231 in words is "one hundred forty-eight million, three hundred thirty-one thousand, two hundred thirty-one".