531033222540 has 48 divisors (see below), whose sum is σ = 1551540549888. Its totient is φ = 135451952064.

The previous prime is 531033222523. The next prime is 531033222569. The reversal of 531033222540 is 45222330135.

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

It is a junction number, because it is equal to n+sod(n) for n = 531033222498 and 531033222507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192401962 + ... + 192404721.

It is an arithmetic number, because the mean of its divisors is an integer number (32323761456).

Almost surely, 2^531033222540 is an apocalyptic number.

It is an amenable number.

531033222540 is an abundant number, since it is smaller than the sum of its proper divisors (1020507327348).

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

531033222540 is a wasteful number, since it uses less digits than its factorization.

531033222540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384806718 (or 384806716 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 531033222540 its reverse (45222330135), we get a palindrome (576255552675).

The spelling of 531033222540 in words is "five hundred thirty-one billion, thirty-three million, two hundred twenty-two thousand, five hundred forty".