149231603 has 2 divisors, whose sum is σ = 149231604. Its totient is φ = 149231602.

The previous prime is 149231587. The next prime is 149231609. The reversal of 149231603 is 306132941.

It is a strong prime.

It is an emirp because it is prime and its reverse (306132941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149231603 - 2⁴ = 149231587 is a prime.

It is equal to p_8403617 and since 149231603 and 8403617 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (149231609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74615801 + 74615802.

It is an arithmetic number, because the mean of its divisors is an integer number (74615802).

Almost surely, 2^149231603 is an apocalyptic number.

149231603 is a deficient number, since it is larger than the sum of its proper divisors (1).

149231603 is an equidigital number, since it uses as much as digits as its factorization.

149231603 is an evil number, because the sum of its binary digits is even.

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

The square root of 149231603 is about 12216.0387605803. The cubic root of 149231603 is about 530.4204602286.

The spelling of 149231603 in words is "one hundred forty-nine million, two hundred thirty-one thousand, six hundred three".