31320422124040 has 32 divisors (see below), whose sum is σ = 80538228319680. Its totient is φ = 10738430442432.

The previous prime is 31320422124031. The next prime is 31320422124151. The reversal of 31320422124040 is 4042122402313.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55929324942 + ... + 55929325501.

It is an arithmetic number, because the mean of its divisors is an integer number (2516819634990).

Almost surely, 2^{31320422124040} is an apocalyptic number.

It is an amenable number.

31320422124040 is an abundant number, since it is smaller than the sum of its proper divisors (49217806195640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31320422124040 is a wasteful number, since it uses less digits than its factorization.

31320422124040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111858650461 (or 111858650457 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 31320422124040 its reverse (4042122402313), we get a palindrome (35362544526353).

The spelling of 31320422124040 in words is "thirty-one trillion, three hundred twenty billion, four hundred twenty-two million, one hundred twenty-four thousand, forty".