133331412 has 24 divisors (see below), whose sum is σ = 313862976. Its totient is φ = 44050048.

The previous prime is 133331399. The next prime is 133331423. The reversal of 133331412 is 214133331.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47808 + ... + 50519.

It is an arithmetic number, because the mean of its divisors is an integer number (13077624).

Almost surely, 2^133331412 is an apocalyptic number.

133331412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133331412 is an abundant number, since it is smaller than the sum of its proper divisors (180531564).

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

133331412 is a wasteful number, since it uses less digits than its factorization.

133331412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98447 (or 98445 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 133331412 is about 11546.9221873190. The cubic root of 133331412 is about 510.8705010242.

Adding to 133331412 its reverse (214133331), we get a palindrome (347464743).

The spelling of 133331412 in words is "one hundred thirty-three million, three hundred thirty-one thousand, four hundred twelve".