133531126 has 8 divisors (see below), whose sum is σ = 210838680. Its totient is φ = 63251568.

The previous prime is 133531087. The next prime is 133531129. The reversal of 133531126 is 621135331.

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

It is a super-2 number, since 2×133531126² = 35661123221655752, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 133531126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133531129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1756951 + ... + 1757026.

It is an arithmetic number, because the mean of its divisors is an integer number (26354835).

Almost surely, 2^133531126 is an apocalyptic number.

133531126 is a deficient number, since it is larger than the sum of its proper divisors (77307554).

133531126 is a wasteful number, since it uses less digits than its factorization.

133531126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3513998.

The product of its digits is 1620, while the sum is 25.

The square root of 133531126 is about 11555.5668835415. The cubic root of 133531126 is about 511.1254474275.

Adding to 133531126 its reverse (621135331), we get a palindrome (754666457).

The spelling of 133531126 in words is "one hundred thirty-three million, five hundred thirty-one thousand, one hundred twenty-six".