2906231 has 2 divisors, whose sum is σ = 2906232. Its totient is φ = 2906230.

The previous prime is 2906213. The next prime is 2906261. The reversal of 2906231 is 1326092.

Together with previous prime (2906213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2906231 is a prime.

It is a super-2 number, since 2×2906231² = 16892357250722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 2906197 and 2906206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2906261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1453115 + 1453116.

It is an arithmetic number, because the mean of its divisors is an integer number (1453116).

2^2906231 is an apocalyptic number.

2906231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2906231 is an equidigital number, since it uses as much as digits as its factorization.

2906231 is an evil number, because the sum of its binary digits is even.

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

The square root of 2906231 is about 1704.7671395238. The cubic root of 2906231 is about 142.7063758459.

The spelling of 2906231 in words is "two million, nine hundred six thousand, two hundred thirty-one".