531023313700 has 144 divisors (see below), whose sum is σ = 1283993694144. Its totient is φ = 189001612800.

The previous prime is 531023313697. The next prime is 531023313707. The reversal of 531023313700 is 7313320135.

It is not an unprimeable number, because it can be changed into a prime (531023313707) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11547954 + ... + 11593846.

It is an arithmetic number, because the mean of its divisors is an integer number (8916622876).

Almost surely, 2^531023313700 is an apocalyptic number.

531023313700 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 531023313700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (641996847072).

531023313700 is an abundant number, since it is smaller than the sum of its proper divisors (752970380444).

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

531023313700 is a wasteful number, since it uses less digits than its factorization.

531023313700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46142 (or 46135 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 28.

Adding to 531023313700 its reverse (7313320135), we get a palindrome (538336633835).

The spelling of 531023313700 in words is "five hundred thirty-one billion, twenty-three million, three hundred thirteen thousand, seven hundred".