531240541000 has 128 divisors (see below), whose sum is σ = 1341491074560. Its totient is φ = 195745248000.

The previous prime is 531240540997. The next prime is 531240541001. The reversal of 531240541000 is 145042135.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (531240541001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6289045 + ... + 6372955.

It is an arithmetic number, because the mean of its divisors is an integer number (10480399020).

Almost surely, 2^531240541000 is an apocalyptic number.

531240541000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531240541000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (670745537280).

531240541000 is an abundant number, since it is smaller than the sum of its proper divisors (810250533560).

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

531240541000 is a wasteful number, since it uses less digits than its factorization.

531240541000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84432 (or 84418 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 531240541000 its reverse (145042135), we get a palindrome (531385583135).

The spelling of 531240541000 in words is "five hundred thirty-one billion, two hundred forty million, five hundred forty-one thousand".