531514144421 has 24 divisors (see below), whose sum is σ = 608795885376. Its totient is φ = 462867799680.

The previous prime is 531514144417. The next prime is 531514144423. The reversal of 531514144421 is 124441415135.

It is not a de Polignac number, because 531514144421 - 2² = 531514144417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531514144423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 652835 + ... + 1220336.

It is an arithmetic number, because the mean of its divisors is an integer number (25366495224).

Almost surely, 2^531514144421 is an apocalyptic number.

It is an amenable number.

531514144421 is a deficient number, since it is larger than the sum of its proper divisors (77281740955).

531514144421 is a wasteful number, since it uses less digits than its factorization.

531514144421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873293 (or 1873280 counting only the distinct ones).

The product of its digits is 38400, while the sum is 35.

Adding to 531514144421 its reverse (124441415135), we get a palindrome (655955559556).

The spelling of 531514144421 in words is "five hundred thirty-one billion, five hundred fourteen million, one hundred forty-four thousand, four hundred twenty-one".