531045134331400 has 96 divisors (see below), whose sum is σ = 1331469312775560. Its totient is φ = 195810701783040.

The previous prime is 531045134331337. The next prime is 531045134331461. The reversal of 531045134331400 is 4133431540135.

It can be written as a sum of positive squares in 12 ways, for example, as 98242629474564 + 432802504856836 = 9911742^2 + 20803906^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 531045134331400.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137417617 + ... + 141229216.

Almost surely, 2^{531045134331400} is an apocalyptic number.

531045134331400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

531045134331400 is an abundant number, since it is smaller than the sum of its proper divisors (800424178444160).

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

531045134331400 is a wasteful number, since it uses less digits than its factorization.

531045134331400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278647595 (or 278647586 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 531045134331400 its reverse (4133431540135), we get a palindrome (535178565871535).

The spelling of 531045134331400 in words is "five hundred thirty-one trillion, forty-five billion, one hundred thirty-four million, three hundred thirty-one thousand, four hundred".