31012428888 has 144 divisors (see below), whose sum is σ = 98619304680. Its totient is φ = 8777776896.

The previous prime is 31012428869. The next prime is 31012428899. The reversal of 31012428888 is 88882421013.

It is a happy number.

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 35 ways as a sum of consecutive naturals, for example, 336420 + ... + 418572.

Almost surely, 2^31012428888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31012428888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49309652340).

31012428888 is an abundant number, since it is smaller than the sum of its proper divisors (67606875792).

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

31012428888 is a wasteful number, since it uses less digits than its factorization.

31012428888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82286 (or 82272 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 45.

The spelling of 31012428888 in words is "thirty-one billion, twelve million, four hundred twenty-eight thousand, eight hundred eighty-eight".