531012112 has 20 divisors (see below), whose sum is σ = 1033148160. Its totient is φ = 264393248.

The previous prime is 531012107. The next prime is 531012169. The reversal of 531012112 is 211210135.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 65608 + ... + 73255.

It is an arithmetic number, because the mean of its divisors is an integer number (51657408).

Almost surely, 2^531012112 is an apocalyptic number.

It is an amenable number.

531012112 is a deficient number, since it is larger than the sum of its proper divisors (502136048).

531012112 is a wasteful number, since it uses less digits than its factorization.

531012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139110 (or 139104 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 531012112 is about 23043.7000501222. The cubic root of 531012112 is about 809.7820436790.

Adding to 531012112 its reverse (211210135), we get a palindrome (742222247).

The spelling of 531012112 in words is "five hundred thirty-one million, twelve thousand, one hundred twelve".