531422354040 has 128 divisors (see below), whose sum is σ = 1649520590400. Its totient is φ = 136802856960.

The previous prime is 531422353999. The next prime is 531422354051. The reversal of 531422354040 is 40453224135.

It is a junction number, because it is equal to n+sod(n) for n = 531422353992 and 531422354010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31941564 + ... + 31958196.

Almost surely, 2^531422354040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531422354040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (824760295200).

531422354040 is an abundant number, since it is smaller than the sum of its proper divisors (1118098236360).

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

531422354040 is a wasteful number, since it uses less digits than its factorization.

531422354040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25857 (or 25853 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 531422354040 its reverse (40453224135), we get a palindrome (571875578175).

The spelling of 531422354040 in words is "five hundred thirty-one billion, four hundred twenty-two million, three hundred fifty-four thousand, forty".