531324104432440 has 64 divisors (see below), whose sum is σ = 1304281852024320. Its totient is φ = 193190589456000.

The previous prime is 531324104432431. The next prime is 531324104432449. The reversal of 531324104432440 is 44234401423135.

It is an interprime number because it is at equal distance from previous prime (531324104432431) and next prime (531324104432449).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 531324104432393 and 531324104432402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531324104432449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52116396 + ... + 61471675.

It is an arithmetic number, because the mean of its divisors is an integer number (20379403937880).

Almost surely, 2^{531324104432440} is an apocalyptic number.

It is an amenable number.

531324104432440 is an abundant number, since it is smaller than the sum of its proper divisors (772957747591880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531324104432440 is a wasteful number, since it uses less digits than its factorization.

531324104432440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113598724 (or 113598720 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 40.

Adding to 531324104432440 its reverse (44234401423135), we get a palindrome (575558505855575).

The spelling of 531324104432440 in words is "five hundred thirty-one trillion, three hundred twenty-four billion, one hundred four million, four hundred thirty-two thousand, four hundred forty".