531542312 has 16 divisors (see below), whose sum is σ = 1139019360. Its totient is φ = 227803824.

The previous prime is 531542303. The next prime is 531542321. The reversal of 531542312 is 213245135.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (531542303) and next prime (531542321).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4745858 + ... + 4745969.

It is an arithmetic number, because the mean of its divisors is an integer number (71188710).

Almost surely, 2^531542312 is an apocalyptic number.

It is an amenable number.

531542312 is an abundant number, since it is smaller than the sum of its proper divisors (607477048).

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

531542312 is a wasteful number, since it uses less digits than its factorization.

531542312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9491840 (or 9491836 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 531542312 is about 23055.2014087928. The cubic root of 531542312 is about 810.0514685580.

Adding to 531542312 its reverse (213245135), we get a palindrome (744787447).

The spelling of 531542312 in words is "five hundred thirty-one million, five hundred forty-two thousand, three hundred twelve".