133071397 has 2 divisors, whose sum is σ = 133071398. Its totient is φ = 133071396.

The previous prime is 133071371. The next prime is 133071403. The reversal of 133071397 is 793170331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123343236 + 9728161 = 11106^2 + 3119^2 .

It is a cyclic number.

It is not a de Polignac number, because 133071397 - 2¹⁹ = 132547109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133071347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66535698 + 66535699.

It is an arithmetic number, because the mean of its divisors is an integer number (66535699).

Almost surely, 2^133071397 is an apocalyptic number.

It is an amenable number.

133071397 is a deficient number, since it is larger than the sum of its proper divisors (1).

133071397 is an equidigital number, since it uses as much as digits as its factorization.

133071397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11907, while the sum is 34.

The square root of 133071397 is about 11535.6576318821. The cubic root of 133071397 is about 510.5381951473.

It can be divided in two parts, 1330 and 71397, that added together give a palindrome (72727).

The spelling of 133071397 in words is "one hundred thirty-three million, seventy-one thousand, three hundred ninety-seven".