135000731 has 4 divisors (see below), whose sum is σ = 140870352. Its totient is φ = 129131112.

The previous prime is 135000727. The next prime is 135000739. The reversal of 135000731 is 137000531.

It is a happy number.

135000731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 137000531 = 617 ⋅222043.

It is a cyclic number.

It is not a de Polignac number, because 135000731 - 2² = 135000727 is a prime.

It is a super-2 number, since 2×135000731² = 36450394741068722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135000739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2934776 + ... + 2934821.

It is an arithmetic number, because the mean of its divisors is an integer number (35217588).

Almost surely, 2^135000731 is an apocalyptic number.

135000731 is a deficient number, since it is larger than the sum of its proper divisors (5869621).

135000731 is an equidigital number, since it uses as much as digits as its factorization.

135000731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5869620.

The product of its (nonzero) digits is 315, while the sum is 20.

The square root of 135000731 is about 11618.9814958111. The cubic root of 135000731 is about 512.9937099216.

The spelling of 135000731 in words is "one hundred thirty-five million, seven hundred thirty-one", and thus it is an aban number.