133131077 has 4 divisors (see below), whose sum is σ = 135118176. Its totient is φ = 131143980.

The previous prime is 133131073. The next prime is 133131091. The reversal of 133131077 is 770131331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133131077 - 2² = 133131073 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133131073) 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, 993449 + ... + 993582.

It is an arithmetic number, because the mean of its divisors is an integer number (33779544).

Almost surely, 2^133131077 is an apocalyptic number.

It is an amenable number.

133131077 is a deficient number, since it is larger than the sum of its proper divisors (1987099).

133131077 is an equidigital number, since it uses as much as digits as its factorization.

133131077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987098.

The product of its (nonzero) digits is 1323, while the sum is 26.

The square root of 133131077 is about 11538.2441038487. The cubic root of 133131077 is about 510.6145059759.

The spelling of 133131077 in words is "one hundred thirty-three million, one hundred thirty-one thousand, seventy-seven".