531020123055210 has 32 divisors (see below), whose sum is σ = 1274459558581440. Its totient is φ = 141604114675968.

The previous prime is 531020123055203. The next prime is 531020123055221. The reversal of 531020123055210 is 12550321020135.

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

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, 74763400 + ... + 81557379.

It is an arithmetic number, because the mean of its divisors is an integer number (39826861205670).

Almost surely, 2^{531020123055210} is an apocalyptic number.

531020123055210 is an abundant number, since it is smaller than the sum of its proper divisors (743439435526230).

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

531020123055210 is a wasteful number, since it uses less digits than its factorization.

531020123055210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156434022.

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 531020123055210 its reverse (12550321020135), we get a palindrome (543570444075345).

The spelling of 531020123055210 in words is "five hundred thirty-one trillion, twenty billion, one hundred twenty-three million, fifty-five thousand, two hundred ten".