531431134135 has 16 divisors (see below), whose sum is σ = 695747740032. Its totient is φ = 386464218400.

The previous prime is 531431134127. The next prime is 531431134147.

531431134135 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 531431134135 - 2³ = 531431134127 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 531431134135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310512 + ... + 1076698.

It is an arithmetic number, because the mean of its divisors is an integer number (43484233752).

Almost surely, 2^531431134135 is an apocalyptic number.

531431134135 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

531431134135 is a deficient number, since it is larger than the sum of its proper divisors (164316605897).

531431134135 is a wasteful number, since it uses less digits than its factorization.

531431134135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778814.

The product of its digits is 32400, while the sum is 34.

It can be divided in two parts, 531431 and 134135, that added together give a palindrome (665566).

The spelling of 531431134135 in words is "five hundred thirty-one billion, four hundred thirty-one million, one hundred thirty-four thousand, one hundred thirty-five".