135451131 has 4 divisors (see below), whose sum is σ = 180601512. Its totient is φ = 90300752.

The previous prime is 135451081. The next prime is 135451159. The reversal of 135451131 is 131154531.

135451131 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.

It is a cyclic number.

It is not a de Polignac number, because 135451131 - 2¹⁵ = 135418363 is a prime.

It is a super-2 number, since 2×135451131² = 36694017778358322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135451181) 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, 22575186 + ... + 22575191.

It is an arithmetic number, because the mean of its divisors is an integer number (45150378).

Almost surely, 2^135451131 is an apocalyptic number.

135451131 is a deficient number, since it is larger than the sum of its proper divisors (45150381).

135451131 is an equidigital number, since it uses as much as digits as its factorization.

135451131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45150380.

The product of its digits is 900, while the sum is 24.

The square root of 135451131 is about 11638.3474342365. The cubic root of 135451131 is about 513.5635732322.

The spelling of 135451131 in words is "one hundred thirty-five million, four hundred fifty-one thousand, one hundred thirty-one".