149630231 has 2 divisors, whose sum is σ = 149630232. Its totient is φ = 149630230.

The previous prime is 149630207. The next prime is 149630287. The reversal of 149630231 is 132036941.

It is a weak prime.

It is an emirp because it is prime and its reverse (132036941) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149630231 is a prime.

It is a super-2 number, since 2×149630231² = 44778412058226722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 149630194 and 149630203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149630291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74815115 + 74815116.

It is an arithmetic number, because the mean of its divisors is an integer number (74815116).

Almost surely, 2^149630231 is an apocalyptic number.

149630231 is a deficient number, since it is larger than the sum of its proper divisors (1).

149630231 is an equidigital number, since it uses as much as digits as its factorization.

149630231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 149630231 is about 12232.3436429819. The cubic root of 149630231 is about 530.8923273466.

The spelling of 149630231 in words is "one hundred forty-nine million, six hundred thirty thousand, two hundred thirty-one".