133731126 has 24 divisors (see below), whose sum is σ = 291358704. Its totient is φ = 44329680.

The previous prime is 133731113. The next prime is 133731149. The reversal of 133731126 is 621137331.

It is a super-2 number, since 2×133731126² = 35768028122455752, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 133731126.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17266 + ... + 23781.

It is an arithmetic number, because the mean of its divisors is an integer number (12139946).

Almost surely, 2^133731126 is an apocalyptic number.

133731126 is an abundant number, since it is smaller than the sum of its proper divisors (157627578).

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

133731126 is a wasteful number, since it uses less digits than its factorization.

133731126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41236 (or 41233 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 133731126 is about 11564.2174832541. The cubic root of 133731126 is about 511.3805043023.

Adding to 133731126 its reverse (621137331), we get a palindrome (754868457).

The spelling of 133731126 in words is "one hundred thirty-three million, seven hundred thirty-one thousand, one hundred twenty-six".