531540234 has 48 divisors (see below), whose sum is σ = 1165207680. Its totient is φ = 175111200.

The previous prime is 531540227. The next prime is 531540253. The reversal of 531540234 is 432045135.

It is a junction number, because it is equal to n+sod(n) for n = 531540198 and 531540207.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 730779 + ... + 731505.

It is an arithmetic number, because the mean of its divisors is an integer number (24275160).

Almost surely, 2^531540234 is an apocalyptic number.

531540234 is an abundant number, since it is smaller than the sum of its proper divisors (633667446).

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

531540234 is a wasteful number, since it uses less digits than its factorization.

531540234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155 (or 1152 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 531540234 is about 23055.1563429962. The cubic root of 531540234 is about 810.0504129574.

Adding to 531540234 its reverse (432045135), we get a palindrome (963585369).

The spelling of 531540234 in words is "five hundred thirty-one million, five hundred forty thousand, two hundred thirty-four".