133803823 has 2 divisors, whose sum is σ = 133803824. Its totient is φ = 133803822.

The previous prime is 133803809. The next prime is 133803847. The reversal of 133803823 is 328308331.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133803823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133801823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66901911 + 66901912.

It is an arithmetic number, because the mean of its divisors is an integer number (66901912).

Almost surely, 2^133803823 is an apocalyptic number.

133803823 is a deficient number, since it is larger than the sum of its proper divisors (1).

133803823 is an equidigital number, since it uses as much as digits as its factorization.

133803823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 133803823 is about 11567.3602433745. The cubic root of 133803823 is about 511.4731506326.

The spelling of 133803823 in words is "one hundred thirty-three million, eight hundred three thousand, eight hundred twenty-three".