531213165434 has 16 divisors (see below), whose sum is σ = 914627788800. Its totient is φ = 226668623184.

The previous prime is 531213165383. The next prime is 531213165463. The reversal of 531213165434 is 434561312135.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82843514 + ... + 82849925.

It is an arithmetic number, because the mean of its divisors is an integer number (57164236800).

Almost surely, 2^531213165434 is an apocalyptic number.

531213165434 is a deficient number, since it is larger than the sum of its proper divisors (383414623366).

531213165434 is a wasteful number, since it uses less digits than its factorization.

531213165434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165693677.

The product of its digits is 129600, while the sum is 38.

Adding to 531213165434 its reverse (434561312135), we get a palindrome (965774477569).

The spelling of 531213165434 in words is "five hundred thirty-one billion, two hundred thirteen million, one hundred sixty-five thousand, four hundred thirty-four".