123809151 has 16 divisors (see below), whose sum is σ = 167354208. Its totient is φ = 81408000.

The previous prime is 123809143. The next prime is 123809159. The reversal of 123809151 is 151908321.

It is an interprime number because it is at equal distance from previous prime (123809143) and next prime (123809159).

It is not a de Polignac number, because 123809151 - 2³ = 123809143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123809159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116161 + ... + 117221.

It is an arithmetic number, because the mean of its divisors is an integer number (10459638).

Almost surely, 2^123809151 is an apocalyptic number.

123809151 is a deficient number, since it is larger than the sum of its proper divisors (43545057).

123809151 is a wasteful number, since it uses less digits than its factorization.

123809151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 123809151 is about 11126.9560527576. The cubic root of 123809151 is about 498.4071322667.

The spelling of 123809151 in words is "one hundred twenty-three million, eight hundred nine thousand, one hundred fifty-one".