131224012 has 12 divisors (see below), whose sum is σ = 229733280. Its totient is φ = 65585936.

The previous prime is 131224007. The next prime is 131224021. The reversal of 131224012 is 210422131.

It is a super-2 number, since 2×131224012² = 34439482650752288, which contains 22 as substring.

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, 8814 + ... + 18442.

It is an arithmetic number, because the mean of its divisors is an integer number (19144440).

Almost surely, 2^131224012 is an apocalyptic number.

It is an amenable number.

131224012 is a deficient number, since it is larger than the sum of its proper divisors (98509268).

131224012 is a wasteful number, since it uses less digits than its factorization.

131224012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13040 (or 13038 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 131224012 is about 11455.3049719333. The cubic root of 131224012 is about 508.1646344683.

Adding to 131224012 its reverse (210422131), we get a palindrome (341646143).

The spelling of 131224012 in words is "one hundred thirty-one million, two hundred twenty-four thousand, twelve".