2319631 has 2 divisors, whose sum is σ = 2319632. Its totient is φ = 2319630.

The previous prime is 2319613. The next prime is 2319649. The reversal of 2319631 is 1369132.

2319631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (2319613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (2319613) and next prime (2319649).

It is a cyclic number.

It is not a de Polignac number, because 2319631 - 2⁷ = 2319503 is a prime.

It is a super-2 number, since 2×2319631² = 10761375952322, which contains 22 as substring.

2319631 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2319596 and 2319605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2319431) 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, 1159815 + 1159816.

It is an arithmetic number, because the mean of its divisors is an integer number (1159816).

2^2319631 is an apocalyptic number.

2319631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2319631 is an equidigital number, since it uses as much as digits as its factorization.

2319631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 25.

The square root of 2319631 is about 1523.0334861716. The cubic root of 2319631 is about 132.3751000536.

The spelling of 2319631 in words is "two million, three hundred nineteen thousand, six hundred thirty-one".