137131249 has 4 divisors (see below), whose sum is σ = 137156580. Its totient is φ = 137105920.

The previous prime is 137131243. The next prime is 137131261. The reversal of 137131249 is 942131731.

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 14630625 + 122500624 = 3825^2 + 11068^2 .

It is a cyclic number.

It is not a de Polignac number, because 137131249 - 2⁹ = 137130737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 137131249.

It is not an unprimeable number, because it can be changed into a prime (137131243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 904 + ... + 16585.

It is an arithmetic number, because the mean of its divisors is an integer number (34289145).

Almost surely, 2^137131249 is an apocalyptic number.

It is an amenable number.

137131249 is a deficient number, since it is larger than the sum of its proper divisors (25331).

137131249 is an equidigital number, since it uses as much as digits as its factorization.

137131249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25330.

The product of its digits is 4536, while the sum is 31.

The square root of 137131249 is about 11710.3052479429. The cubic root of 137131249 is about 515.6782454669.

The spelling of 137131249 in words is "one hundred thirty-seven million, one hundred thirty-one thousand, two hundred forty-nine".