1406612231 has 2 divisors, whose sum is σ = 1406612232. Its totient is φ = 1406612230.

The previous prime is 1406612213. The next prime is 1406612257. The reversal of 1406612231 is 1322166041.

Together with previous prime (1406612213) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (1406612257) can be obtained adding 1406612231 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1406612231 - 2⁶ = 1406612167 is a prime.

It is a super-2 number, since 2×1406612231² = 3957115936797594722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1406612231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1406612261) 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, 703306115 + 703306116.

It is an arithmetic number, because the mean of its divisors is an integer number (703306116).

Almost surely, 2^1406612231 is an apocalyptic number.

1406612231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1406612231 is an equidigital number, since it uses as much as digits as its factorization.

1406612231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1406612231 is about 37504.8294356873. The cubic root of 1406612231 is about 1120.4473741571.

Adding to 1406612231 its reverse (1322166041), we get a palindrome (2728778272).

The spelling of 1406612231 in words is "one billion, four hundred six million, six hundred twelve thousand, two hundred thirty-one".