133261131 has 8 divisors (see below), whose sum is σ = 177745104. Its totient is φ = 88808960.

The previous prime is 133261081. The next prime is 133261187. The reversal of 133261131 is 131162331.

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

It is a cyclic number.

It is not a de Polignac number, because 133261131 - 2¹⁴ = 133244747 is a prime.

It is a super-2 number, since 2×133261131² = 35517058070798322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133261098 and 133261107.

It is not an unprimeable number, because it can be changed into a prime (133261831) by changing a digit.

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, 4711 + ... + 16991.

It is an arithmetic number, because the mean of its divisors is an integer number (22218138).

Almost surely, 2^133261131 is an apocalyptic number.

133261131 is a deficient number, since it is larger than the sum of its proper divisors (44483973).

133261131 is a wasteful number, since it uses less digits than its factorization.

133261131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15901.

The product of its digits is 324, while the sum is 21.

The square root of 133261131 is about 11543.8785076767. The cubic root of 133261131 is about 510.7807227301.

The spelling of 133261131 in words is "one hundred thirty-three million, two hundred sixty-one thousand, one hundred thirty-one".