135847431 has 6 divisors (see below), whose sum is σ = 196224080. Its totient is φ = 90564948.

The previous prime is 135847429. The next prime is 135847447. The reversal of 135847431 is 134748531.

It is a happy number.

135847431 is a `hidden beast` number, since 1 + 3 + 584 + 74 + 3 + 1 = 666.

It is not a de Polignac number, because 135847431 - 2¹ = 135847429 is a prime.

It is a super-2 number, since 2×135847431² = 36909049018599522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135847331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7547071 + ... + 7547088.

Almost surely, 2^135847431 is an apocalyptic number.

135847431 is a deficient number, since it is larger than the sum of its proper divisors (60376649).

135847431 is a wasteful number, since it uses less digits than its factorization.

135847431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15094165 (or 15094162 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 135847431 is about 11655.3606121818. The cubic root of 135847431 is about 514.0639433033.

The spelling of 135847431 in words is "one hundred thirty-five million, eight hundred forty-seven thousand, four hundred thirty-one".