531323130450 has 96 divisors (see below), whose sum is σ = 1516028860800. Its totient is φ = 120630182400.

The previous prime is 531323130449. The next prime is 531323130461. The reversal of 531323130450 is 54031323135.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1541611 + ... + 1854510.

It is an arithmetic number, because the mean of its divisors is an integer number (15791967300).

Almost surely, 2^531323130450 is an apocalyptic number.

531323130450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

531323130450 is an abundant number, since it is smaller than the sum of its proper divisors (984705730350).

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

531323130450 is a wasteful number, since it uses less digits than its factorization.

531323130450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3396292 (or 3396287 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 30.

Adding to 531323130450 its reverse (54031323135), we get a palindrome (585354453585).

The spelling of 531323130450 in words is "five hundred thirty-one billion, three hundred twenty-three million, one hundred thirty thousand, four hundred fifty".