27195031 has 2 divisors, whose sum is σ = 27195032. Its totient is φ = 27195030.

The previous prime is 27194977. The next prime is 27195041. The reversal of 27195031 is 13059172.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27195031 is a prime.

It is a super-2 number, since 2×27195031² = 1479139422181922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27195041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13597515 + 13597516.

It is an arithmetic number, because the mean of its divisors is an integer number (13597516).

Almost surely, 2^27195031 is an apocalyptic number.

27195031 is a deficient number, since it is larger than the sum of its proper divisors (1).

27195031 is an equidigital number, since it uses as much as digits as its factorization.

27195031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 27195031 is about 5214.8855212747. The cubic root of 27195031 is about 300.7206047471.

It can be divided in two parts, 2719 and 5031, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 27195031 in words is "twenty-seven million, one hundred ninety-five thousand, thirty-one".