27933131 has 4 divisors (see below), whose sum is σ = 27997200. Its totient is φ = 27869064.

The previous prime is 27933107. The next prime is 27933133. The reversal of 27933131 is 13133972.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27933131 is a prime.

It is a super-2 number, since 2×27933131² = 1560519614926322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27933094 and 27933103.

It is not an unprimeable number, because it can be changed into a prime (27933133) 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, 31376 + ... + 32253.

It is an arithmetic number, because the mean of its divisors is an integer number (6999300).

Almost surely, 2^27933131 is an apocalyptic number.

27933131 is a deficient number, since it is larger than the sum of its proper divisors (64069).

27933131 is an equidigital number, since it uses as much as digits as its factorization.

27933131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64068.

The product of its digits is 3402, while the sum is 29.

The square root of 27933131 is about 5285.1803185890. The cubic root of 27933131 is about 303.4169739428.

The spelling of 27933131 in words is "twenty-seven million, nine hundred thirty-three thousand, one hundred thirty-one".