531043402431 has 4 divisors (see below), whose sum is σ = 708057869912. Its totient is φ = 354028934952.

The previous prime is 531043402429. The next prime is 531043402453. The reversal of 531043402431 is 134204340135.

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

It is not a de Polignac number, because 531043402431 - 2¹ = 531043402429 is a prime.

It is a super-2 number, since 2×531043402431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531043402031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88507233736 + ... + 88507233741.

It is an arithmetic number, because the mean of its divisors is an integer number (177014467478).

Almost surely, 2^531043402431 is an apocalyptic number.

531043402431 is a deficient number, since it is larger than the sum of its proper divisors (177014467481).

531043402431 is a wasteful number, since it uses less digits than its factorization.

531043402431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177014467480.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 531043402431 its reverse (134204340135), we get a palindrome (665247742566).

The spelling of 531043402431 in words is "five hundred thirty-one billion, forty-three million, four hundred two thousand, four hundred thirty-one".