27701231 has 2 divisors, whose sum is σ = 27701232. Its totient is φ = 27701230.

The previous prime is 27701227. The next prime is 27701239. The reversal of 27701231 is 13210772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27701231 - 2² = 27701227 is a prime.

It is a super-2 number, since 2×27701231² = 1534716397830722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27701197 and 27701206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27701239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13850615 + 13850616.

It is an arithmetic number, because the mean of its divisors is an integer number (13850616).

Almost surely, 2^27701231 is an apocalyptic number.

27701231 is a deficient number, since it is larger than the sum of its proper divisors (1).

27701231 is an equidigital number, since it uses as much as digits as its factorization.

27701231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 27701231 is about 5263.1958922313. The cubic root of 27701231 is about 302.5749867603.

The spelling of 27701231 in words is "twenty-seven million, seven hundred one thousand, two hundred thirty-one".