133213277 has 2 divisors, whose sum is σ = 133213278. Its totient is φ = 133213276.

The previous prime is 133213273. The next prime is 133213337. The reversal of 133213277 is 772312331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120582361 + 12630916 = 10981^2 + 3554^2 .

It is a cyclic number.

It is not a de Polignac number, because 133213277 - 2² = 133213273 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133213271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66606638 + 66606639.

It is an arithmetic number, because the mean of its divisors is an integer number (66606639).

Almost surely, 2^133213277 is an apocalyptic number.

It is an amenable number.

133213277 is a deficient number, since it is larger than the sum of its proper divisors (1).

133213277 is an equidigital number, since it uses as much as digits as its factorization.

133213277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5292, while the sum is 29.

The square root of 133213277 is about 11541.8056213055. The cubic root of 133213277 is about 510.7195750498.

The spelling of 133213277 in words is "one hundred thirty-three million, two hundred thirteen thousand, two hundred seventy-seven".