531440253030 has 32 divisors (see below), whose sum is σ = 1276941484800. Its totient is φ = 141552414432.

The previous prime is 531440253017. The next prime is 531440253037. The reversal of 531440253030 is 30352044135.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531440253037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10285450 + ... + 10336989.

It is an arithmetic number, because the mean of its divisors is an integer number (39904421400).

Almost surely, 2^531440253030 is an apocalyptic number.

531440253030 is an abundant number, since it is smaller than the sum of its proper divisors (745501231770).

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

531440253030 is a wasteful number, since it uses less digits than its factorization.

531440253030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20623308.

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

Adding to 531440253030 its reverse (30352044135), we get a palindrome (561792297165).

The spelling of 531440253030 in words is "five hundred thirty-one billion, four hundred forty million, two hundred fifty-three thousand, thirty".