133535131 has 8 divisors (see below), whose sum is σ = 138023424. Its totient is φ = 129115560.

The previous prime is 133535107. The next prime is 133535159. The reversal of 133535131 is 131535331.

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 133535131 - 2⁵ = 133535099 is a prime.

It is a super-2 number, since 2×133535131² = 35663262422374322, 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 = 133535096 and 133535105.

It is not an unprimeable number, because it can be changed into a prime (133535191) 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, 13215 + ... + 21016.

It is an arithmetic number, because the mean of its divisors is an integer number (17252928).

Almost surely, 2^133535131 is an apocalyptic number.

133535131 is a deficient number, since it is larger than the sum of its proper divisors (4488293).

133535131 is an equidigital number, since it uses as much as digits as its factorization.

133535131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34361.

The product of its digits is 2025, while the sum is 25.

The square root of 133535131 is about 11555.7401753414. The cubic root of 133535131 is about 511.1305574394.

The spelling of 133535131 in words is "one hundred thirty-three million, five hundred thirty-five thousand, one hundred thirty-one".