133061263 has 4 divisors (see below), whose sum is σ = 135047320. Its totient is φ = 131075208.

The previous prime is 133061249. The next prime is 133061267. The reversal of 133061263 is 362160331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 362160331 = 13 ⋅27858487.

It is a cyclic number.

It is not a de Polignac number, because 133061263 - 2⁵ = 133061231 is a prime.

It is a super-2 number, since 2×133061263² = 35410599422310338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133061267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 992928 + ... + 993061.

It is an arithmetic number, because the mean of its divisors is an integer number (33761830).

Almost surely, 2^133061263 is an apocalyptic number.

133061263 is a deficient number, since it is larger than the sum of its proper divisors (1986057).

133061263 is an equidigital number, since it uses as much as digits as its factorization.

133061263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986056.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 133061263 is about 11535.2183767799. The cubic root of 133061263 is about 510.5252348731.

The spelling of 133061263 in words is "one hundred thirty-three million, sixty-one thousand, two hundred sixty-three".