31235220442004 has 24 divisors (see below), whose sum is σ = 54708943533888. Its totient is φ = 15604094845440.

The previous prime is 31235220441947. The next prime is 31235220442057. The reversal of 31235220442004 is 40024402253213.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 122112587 + ... + 122368109.

It is an arithmetic number, because the mean of its divisors is an integer number (2279539313912).

Almost surely, 2^{31235220442004} is an apocalyptic number.

It is an amenable number.

31235220442004 is a deficient number, since it is larger than the sum of its proper divisors (23473723091884).

31235220442004 is a wasteful number, since it uses less digits than its factorization.

31235220442004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281855 (or 281853 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 31235220442004 its reverse (40024402253213), we get a palindrome (71259622695217).

The spelling of 31235220442004 in words is "thirty-one trillion, two hundred thirty-five billion, two hundred twenty million, four hundred forty-two thousand, four".