133134231 has 4 divisors (see below), whose sum is σ = 177512312. Its totient is φ = 88756152.

The previous prime is 133134217. The next prime is 133134263. The reversal of 133134231 is 132431331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132431331 = 3 ⋅44143777.

It is not a de Polignac number, because 133134231 - 2⁶ = 133134167 is a prime.

It is a super-2 number, since 2×133134231² = 35449446927922722, 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 = 133134198 and 133134207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133134431) 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, 22189036 + ... + 22189041.

It is an arithmetic number, because the mean of its divisors is an integer number (44378078).

Almost surely, 2^133134231 is an apocalyptic number.

133134231 is a deficient number, since it is larger than the sum of its proper divisors (44378081).

133134231 is an equidigital number, since it uses as much as digits as its factorization.

133134231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44378080.

The product of its digits is 648, while the sum is 21.

The square root of 133134231 is about 11538.3807789481. The cubic root of 133134231 is about 510.6185382562.

Adding to 133134231 its reverse (132431331), we get a palindrome (265565562).

The spelling of 133134231 in words is "one hundred thirty-three million, one hundred thirty-four thousand, two hundred thirty-one".