137744231 has 2 divisors, whose sum is σ = 137744232. Its totient is φ = 137744230.

The previous prime is 137744221. The next prime is 137744237. The reversal of 137744231 is 132447731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 137744231 - 2¹⁸ = 137482087 is a prime.

It is a super-2 number, since 2×137744231² = 37946946347562722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137744237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68872115 + 68872116.

It is an arithmetic number, because the mean of its divisors is an integer number (68872116).

Almost surely, 2^137744231 is an apocalyptic number.

137744231 is a deficient number, since it is larger than the sum of its proper divisors (1).

137744231 is an equidigital number, since it uses as much as digits as its factorization.

137744231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 32.

The square root of 137744231 is about 11736.4488240694. The cubic root of 137744231 is about 516.4454706750.

The spelling of 137744231 in words is "one hundred thirty-seven million, seven hundred forty-four thousand, two hundred thirty-one".