135434731 has 4 divisors (see below), whose sum is σ = 135459000. Its totient is φ = 135410464.

The previous prime is 135434729. The next prime is 135434759. The reversal of 135434731 is 137434531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 137434531 = 13 ⋅10571887.

It is a cyclic number.

It is not a de Polignac number, because 135434731 - 2¹ = 135434729 is a prime.

It is a super-2 number, since 2×135434731² = 36685132722084722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135434693 and 135434702.

It is not an unprimeable number, because it can be changed into a prime (135434711) 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, 915 + ... + 16483.

It is an arithmetic number, because the mean of its divisors is an integer number (33864750).

Almost surely, 2^135434731 is an apocalyptic number.

135434731 is a deficient number, since it is larger than the sum of its proper divisors (24269).

135434731 is an equidigital number, since it uses as much as digits as its factorization.

135434731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24268.

The product of its digits is 15120, while the sum is 31.

The square root of 135434731 is about 11637.6428455250. The cubic root of 135434731 is about 513.5428455043.

It can be divided in two parts, 135 and 434731, that multiplied together give a palindrome (58688685).

The spelling of 135434731 in words is "one hundred thirty-five million, four hundred thirty-four thousand, seven hundred thirty-one".