133202731 has 2 divisors, whose sum is σ = 133202732. Its totient is φ = 133202730.

The previous prime is 133202717. The next prime is 133202743. The reversal of 133202731 is 137202331.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133202731 - 2¹⁵ = 133169963 is a prime.

It is a super-2 number, since 2×133202731² = 35485935091716722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (133202791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66601365 + 66601366.

It is an arithmetic number, because the mean of its divisors is an integer number (66601366).

Almost surely, 2^133202731 is an apocalyptic number.

133202731 is a deficient number, since it is larger than the sum of its proper divisors (1).

133202731 is an equidigital number, since it uses as much as digits as its factorization.

133202731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 133202731 is about 11541.3487513375. The cubic root of 133202731 is about 510.7060974373.

The spelling of 133202731 in words is "one hundred thirty-three million, two hundred two thousand, seven hundred thirty-one".