31120056426 has 16 divisors (see below), whose sum is σ = 64386324000. Its totient is φ = 10015650288.

The previous prime is 31120056421. The next prime is 31120056427. The reversal of 31120056426 is 62465002113.

It is a junction number, because it is equal to n+sod(n) for n = 31120056393 and 31120056402.

It is not an unprimeable number, because it can be changed into a prime (31120056421) by changing a digit.

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, 89425276 + ... + 89425623.

It is an arithmetic number, because the mean of its divisors is an integer number (4024145250).

Almost surely, 2^31120056426 is an apocalyptic number.

31120056426 is an abundant number, since it is smaller than the sum of its proper divisors (33266267574).

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

31120056426 is a wasteful number, since it uses less digits than its factorization.

31120056426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178850933.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 31120056426 its reverse (62465002113), we get a palindrome (93585058539).

The spelling of 31120056426 in words is "thirty-one billion, one hundred twenty million, fifty-six thousand, four hundred twenty-six".