133230919 has 2 divisors, whose sum is σ = 133230920. Its totient is φ = 133230918.

The previous prime is 133230863. The next prime is 133230931. The reversal of 133230919 is 919032331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133230919 - 2⁹ = 133230407 is a prime.

It is a super-2 number, since 2×133230919² = 35500955555169122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133230949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66615459 + 66615460.

It is an arithmetic number, because the mean of its divisors is an integer number (66615460).

Almost surely, 2^133230919 is an apocalyptic number.

133230919 is a deficient number, since it is larger than the sum of its proper divisors (1).

133230919 is an equidigital number, since it uses as much as digits as its factorization.

133230919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 31.

The square root of 133230919 is about 11542.5698611704. The cubic root of 133230919 is about 510.7421196421.

The spelling of 133230919 in words is "one hundred thirty-three million, two hundred thirty thousand, nine hundred nineteen".