31442423303 has 4 divisors (see below), whose sum is σ = 31460361408. Its totient is φ = 31424485200.

The previous prime is 31442423269. The next prime is 31442423317. The reversal of 31442423303 is 30332424413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30332424413 = 9749 ⋅3111337.

It is a cyclic number.

It is not a de Polignac number, because 31442423303 - 2¹⁰ = 31442422279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31442423333) 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 in 3 ways as a sum of consecutive naturals, for example, 8966423 + ... + 8969928.

It is an arithmetic number, because the mean of its divisors is an integer number (7865090352).

Almost surely, 2^31442423303 is an apocalyptic number.

31442423303 is a deficient number, since it is larger than the sum of its proper divisors (17938105).

31442423303 is a wasteful number, since it uses less digits than its factorization.

31442423303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17938104.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 31442423303 its reverse (30332424413), we get a palindrome (61774847716).

The spelling of 31442423303 in words is "thirty-one billion, four hundred forty-two million, four hundred twenty-three thousand, three hundred three".