137232905 has 4 divisors (see below), whose sum is σ = 164679492. Its totient is φ = 109786320.

The previous prime is 137232883. The next prime is 137232911. The reversal of 137232905 is 509232731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77387209 + 59845696 = 8797^2 + 7736^2 .

It is not a de Polignac number, because 137232905 - 2¹⁰ = 137231881 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13723286 + ... + 13723295.

It is an arithmetic number, because the mean of its divisors is an integer number (41169873).

Almost surely, 2^137232905 is an apocalyptic number.

It is an amenable number.

137232905 is a deficient number, since it is larger than the sum of its proper divisors (27446587).

137232905 is an equidigital number, since it uses as much as digits as its factorization.

137232905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27446586.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 137232905 is about 11714.6448943192. The cubic root of 137232905 is about 515.8056388459.

The spelling of 137232905 in words is "one hundred thirty-seven million, two hundred thirty-two thousand, nine hundred five".