240442031 has 2 divisors, whose sum is σ = 240442032. Its totient is φ = 240442030.

The previous prime is 240442009. The next prime is 240442039. The reversal of 240442031 is 130244042.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 240442031 - 2⁶ = 240441967 is a prime.

It is a super-2 number, since 2×240442031² = 115624740542809922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 240441994 and 240442012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240442039) 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, 120221015 + 120221016.

It is an arithmetic number, because the mean of its divisors is an integer number (120221016).

Almost surely, 2^240442031 is an apocalyptic number.

240442031 is a deficient number, since it is larger than the sum of its proper divisors (1).

240442031 is an equidigital number, since it uses as much as digits as its factorization.

240442031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 240442031 is about 15506.1933110612. The cubic root of 240442031 is about 621.8277930581.

Adding to 240442031 its reverse (130244042), we get a palindrome (370686073).

The spelling of 240442031 in words is "two hundred forty million, four hundred forty-two thousand, thirty-one".