31338386120 has 64 divisors (see below), whose sum is σ = 71880099840. Its totient is φ = 12293881600.

The previous prime is 31338386099. The next prime is 31338386161. The reversal of 31338386120 is 2168383313.

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 15 ways as a sum of consecutive naturals, for example, 513554 + ... + 571326.

It is an arithmetic number, because the mean of its divisors is an integer number (1123126560).

Almost surely, 2^31338386120 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 31338386120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35940049920).

31338386120 is an abundant number, since it is smaller than the sum of its proper divisors (40541713720).

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

31338386120 is a wasteful number, since it uses less digits than its factorization.

31338386120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58046 (or 58042 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 31338386120 in words is "thirty-one billion, three hundred thirty-eight million, three hundred eighty-six thousand, one hundred twenty".