31442718403 has 2 divisors, whose sum is σ = 31442718404. Its totient is φ = 31442718402.

The previous prime is 31442718397. The next prime is 31442718451. The reversal of 31442718403 is 30481724413.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31442718403 - 2⁵ = 31442718371 is a prime.

It is a super-3 number, since 3×31442718403³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (31442718103) 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, 15721359201 + 15721359202.

It is an arithmetic number, because the mean of its divisors is an integer number (15721359202).

Almost surely, 2^31442718403 is an apocalyptic number.

31442718403 is a deficient number, since it is larger than the sum of its proper divisors (1).

31442718403 is an equidigital number, since it uses as much as digits as its factorization.

31442718403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 37.

The spelling of 31442718403 in words is "thirty-one billion, four hundred forty-two million, seven hundred eighteen thousand, four hundred three".