2206931 has 2 divisors, whose sum is σ = 2206932. Its totient is φ = 2206930.

The previous prime is 2206927. The next prime is 2206937. The reversal of 2206931 is 1396022.

2206931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2206931 - 2² = 2206927 is a prime.

It is a super-2 number, since 2×2206931² = 9741088877522, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2206897 and 2206906.

It is not a weakly prime, because it can be changed into another prime (2206937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1103465 + 1103466.

It is an arithmetic number, because the mean of its divisors is an integer number (1103466).

2^2206931 is an apocalyptic number.

2206931 is a deficient number, since it is larger than the sum of its proper divisors (1).

2206931 is an equidigital number, since it uses as much as digits as its factorization.

2206931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 2206931 is about 1485.5742997238. The cubic root of 2206931 is about 130.1955833119.

The spelling of 2206931 in words is "two million, two hundred six thousand, nine hundred thirty-one".