531315231145 has 8 divisors (see below), whose sum is σ = 645648888960. Its totient is φ = 419671777200.

The previous prime is 531315231133. The next prime is 531315231229. The reversal of 531315231145 is 541132513135.

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

It is not a de Polignac number, because 531315231145 - 2⁷ = 531315231017 is a prime.

It is a super-2 number, since 2×531315231145² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 531315231145.

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, 672550531 + ... + 672551320.

It is an arithmetic number, because the mean of its divisors is an integer number (80706111120).

Almost surely, 2^531315231145 is an apocalyptic number.

It is an amenable number.

531315231145 is a deficient number, since it is larger than the sum of its proper divisors (114333657815).

531315231145 is a wasteful number, since it uses less digits than its factorization.

531315231145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345101935.

The product of its digits is 27000, while the sum is 34.

The spelling of 531315231145 in words is "five hundred thirty-one billion, three hundred fifteen million, two hundred thirty-one thousand, one hundred forty-five".