133131293 has 2 divisors, whose sum is σ = 133131294. Its totient is φ = 133131292.

The previous prime is 133131277. The next prime is 133131343. The reversal of 133131293 is 392131331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97871449 + 35259844 = 9893^2 + 5938^2 .

It is a cyclic number.

It is not a de Polignac number, because 133131293 - 2⁴ = 133131277 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133131203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66565646 + 66565647.

It is an arithmetic number, because the mean of its divisors is an integer number (66565647).

Almost surely, 2^133131293 is an apocalyptic number.

It is an amenable number.

133131293 is a deficient number, since it is larger than the sum of its proper divisors (1).

133131293 is an equidigital number, since it uses as much as digits as its factorization.

133131293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1458, while the sum is 26.

The square root of 133131293 is about 11538.2534640213. The cubic root of 133131293 is about 510.6147821265.

The spelling of 133131293 in words is "one hundred thirty-three million, one hundred thirty-one thousand, two hundred ninety-three".