137529731 has 2 divisors, whose sum is σ = 137529732. Its totient is φ = 137529730.

The previous prime is 137529713. The next prime is 137529751. The reversal of 137529731 is 137925731.

Together with previous prime (137529713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137529731 - 2¹⁴ = 137513347 is a prime.

It is a super-2 number, since 2×137529731² = 37828853817864722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (137529751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68764865 + 68764866.

It is an arithmetic number, because the mean of its divisors is an integer number (68764866).

Almost surely, 2^137529731 is an apocalyptic number.

137529731 is a deficient number, since it is larger than the sum of its proper divisors (1).

137529731 is an equidigital number, since it uses as much as digits as its factorization.

137529731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39690, while the sum is 38.

The square root of 137529731 is about 11727.3070651365. The cubic root of 137529731 is about 516.1772559201.

The spelling of 137529731 in words is "one hundred thirty-seven million, five hundred twenty-nine thousand, seven hundred thirty-one".