133412331 has 8 divisors (see below), whose sum is σ = 191566480. Its totient is φ = 82099872.

The previous prime is 133412309. The next prime is 133412333. The reversal of 133412331 is 133214331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133412331 - 2¹⁴ = 133395947 is a prime.

It is a super-2 number, since 2×133412331² = 35597700125707122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133412298 and 133412307.

It is not an unprimeable number, because it can be changed into a prime (133412333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1710376 + ... + 1710453.

It is an arithmetic number, because the mean of its divisors is an integer number (23945810).

Almost surely, 2^133412331 is an apocalyptic number.

133412331 is a deficient number, since it is larger than the sum of its proper divisors (58154149).

133412331 is a wasteful number, since it uses less digits than its factorization.

133412331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3420845.

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

The square root of 133412331 is about 11550.4255765751. The cubic root of 133412331 is about 510.9738294380.

Adding to 133412331 its reverse (133214331), we get a palindrome (266626662).

The spelling of 133412331 in words is "one hundred thirty-three million, four hundred twelve thousand, three hundred thirty-one".