135331133531 has 4 divisors (see below), whose sum is σ = 147633963864. Its totient is φ = 123028303200.

The previous prime is 135331133527. The next prime is 135331133551.

135331133531 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 135331133531 - 2² = 135331133527 is a prime.

It is a super-2 number, since 2×135331133531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135331133501) 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, 6151415150 + ... + 6151415171.

It is an arithmetic number, because the mean of its divisors is an integer number (36908490966).

Almost surely, 2^135331133531 is an apocalyptic number.

135331133531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

135331133531 is a deficient number, since it is larger than the sum of its proper divisors (12302830333).

135331133531 is a wasteful number, since it uses less digits than its factorization.

135331133531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12302830332.

The product of its digits is 18225, while the sum is 32.

It can be divided in two parts, 135331 and 133531, that added together give a palindrome (268862).

The spelling of 135331133531 in words is "one hundred thirty-five billion, three hundred thirty-one million, one hundred thirty-three thousand, five hundred thirty-one".