133131244 has 6 divisors (see below), whose sum is σ = 232979684. Its totient is φ = 66565620.

The previous prime is 133131227. The next prime is 133131247. The reversal of 133131244 is 442131331.

It is not an unprimeable number, because it can be changed into a prime (133131247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16641402 + ... + 16641409.

Almost surely, 2^133131244 is an apocalyptic number.

It is an amenable number.

133131244 is a deficient number, since it is larger than the sum of its proper divisors (99848440).

133131244 is a wasteful number, since it uses less digits than its factorization.

133131244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33282815 (or 33282813 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 133131244 is about 11538.2513406495. The cubic root of 133131244 is about 510.6147194813.

Adding to 133131244 its reverse (442131331), we get a palindrome (575262575).

The spelling of 133131244 in words is "one hundred thirty-three million, one hundred thirty-one thousand, two hundred forty-four".