531321130 has 16 divisors (see below), whose sum is σ = 1006714080. Its totient is φ = 201342672.

The previous prime is 531321113. The next prime is 531321169. The reversal of 531321130 is 31123135.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 531321098 and 531321107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1398024 + ... + 1398403.

It is an arithmetic number, because the mean of its divisors is an integer number (62919630).

Almost surely, 2^531321130 is an apocalyptic number.

531321130 is a deficient number, since it is larger than the sum of its proper divisors (475392950).

531321130 is a wasteful number, since it uses less digits than its factorization.

531321130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2796453.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 531321130 is about 23050.4041179325. The cubic root of 531321130 is about 809.9390951513.

Adding to 531321130 its reverse (31123135), we get a palindrome (562444265).

The spelling of 531321130 in words is "five hundred thirty-one million, three hundred twenty-one thousand, one hundred thirty".