135152431 has 4 divisors (see below), whose sum is σ = 143102592. Its totient is φ = 127202272.

The previous prime is 135152429. The next prime is 135152471. The reversal of 135152431 is 134251531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135152431 - 2¹ = 135152429 is a prime.

It is a super-2 number, since 2×135152431² = 36532359210419522, 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 = 135152396 and 135152405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135152411) 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, 3975055 + ... + 3975088.

It is an arithmetic number, because the mean of its divisors is an integer number (35775648).

Almost surely, 2^135152431 is an apocalyptic number.

135152431 is a deficient number, since it is larger than the sum of its proper divisors (7950161).

135152431 is an equidigital number, since it uses as much as digits as its factorization.

135152431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7950160.

The product of its digits is 1800, while the sum is 25.

The square root of 135152431 is about 11625.5077738566. The cubic root of 135152431 is about 513.1857879306.

The spelling of 135152431 in words is "one hundred thirty-five million, one hundred fifty-two thousand, four hundred thirty-one".