135132231531 has 8 divisors (see below), whose sum is σ = 196555973184. Its totient is φ = 81898322120.

The previous prime is 135132231527. The next prime is 135132231551.

135132231531 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135132231531 - 2² = 135132231527 is a prime.

It is a super-2 number, since 2×135132231531² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135132231551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2047458021 + ... + 2047458086.

It is an arithmetic number, because the mean of its divisors is an integer number (24569496648).

Almost surely, 2^135132231531 is an apocalyptic number.

135132231531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

135132231531 is a deficient number, since it is larger than the sum of its proper divisors (61423741653).

135132231531 is a wasteful number, since it uses less digits than its factorization.

135132231531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4094916121.

The product of its digits is 8100, while the sum is 30.

It can be divided in two parts, 135132 and 231531, that added together give a palindrome (366663).

The spelling of 135132231531 in words is "one hundred thirty-five billion, one hundred thirty-two million, two hundred thirty-one thousand, five hundred thirty-one".