27761031 has 12 divisors (see below), whose sum is σ = 40268800. Its totient is φ = 18429120.

The previous prime is 27761021. The next prime is 27761053. The reversal of 27761031 is 13016772.

It is a de Polignac number, because none of the positive numbers 2^k-27761031 is a prime.

It is a super-2 number, since 2×27761031² = 1541349684365922, 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 = 27760986 and 27761004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27761011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4231 + ... + 8568.

Almost surely, 2^27761031 is an apocalyptic number.

27761031 is a deficient number, since it is larger than the sum of its proper divisors (12507769).

27761031 is a wasteful number, since it uses less digits than its factorization.

27761031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13046 (or 13043 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 27761031 is about 5268.8737885814. The cubic root of 27761031 is about 302.7925580742.

The spelling of 27761031 in words is "twenty-seven million, seven hundred sixty-one thousand, thirty-one".