2400031 has 2 divisors, whose sum is σ = 2400032. Its totient is φ = 2400030.

The previous prime is 2400019. The next prime is 2400037. The reversal of 2400031 is 1300042.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2400031 - 2⁹ = 2399519 is a prime.

It is a super-2 number, since 2×2400031² = 11520297601922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2399990 and 2400017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2400037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1200015 + 1200016.

It is an arithmetic number, because the mean of its divisors is an integer number (1200016).

2^2400031 is an apocalyptic number.

2400031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2400031 is an equidigital number, since it uses as much as digits as its factorization.

2400031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 2400031 is about 1549.2033436576. The cubic root of 2400031 is about 133.8871664701.

Adding to 2400031 its reverse (1300042), we get a palindrome (3700073).

The spelling of 2400031 in words is "two million, four hundred thousand, thirty-one".