531440412 has 24 divisors (see below), whose sum is σ = 1305292800. Its totient is φ = 167823216.

The previous prime is 531440363. The next prime is 531440453. The reversal of 531440412 is 214044135.

It is a congruent number.

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, 1165212 + ... + 1165667.

It is an arithmetic number, because the mean of its divisors is an integer number (54387200).

Almost surely, 2^531440412 is an apocalyptic number.

It is an amenable number.

531440412 is an abundant number, since it is smaller than the sum of its proper divisors (773852388).

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

531440412 is a wasteful number, since it uses less digits than its factorization.

531440412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330905 (or 2330903 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 531440412 is about 23052.9913894054. The cubic root of 531440412 is about 809.9997012649. Note that the first 3 decimals are identical.

Adding to 531440412 its reverse (214044135), we get a palindrome (745484547).

The spelling of 531440412 in words is "five hundred thirty-one million, four hundred forty thousand, four hundred twelve".