133027381 has 2 divisors, whose sum is σ = 133027382. Its totient is φ = 133027380.

The previous prime is 133027351. The next prime is 133027409. The reversal of 133027381 is 183720331.

It is an a-pointer prime, because the next prime (133027409) can be obtained adding 133027381 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83887281 + 49140100 = 9159^2 + 7010^2 .

It is a cyclic number.

It is not a de Polignac number, because 133027381 - 2⁷ = 133027253 is a prime.

It is a super-2 number, since 2×133027381² = 35392568191438322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133027351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66513690 + 66513691.

It is an arithmetic number, because the mean of its divisors is an integer number (66513691).

Almost surely, 2^133027381 is an apocalyptic number.

It is an amenable number.

133027381 is a deficient number, since it is larger than the sum of its proper divisors (1).

133027381 is an equidigital number, since it uses as much as digits as its factorization.

133027381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 133027381 is about 11533.7496504823. The cubic root of 133027381 is about 510.4818987335.

The spelling of 133027381 in words is "one hundred thirty-three million, twenty-seven thousand, three hundred eighty-one".