31446052820 has 144 divisors (see below), whose sum is σ = 83166870528. Its totient is φ = 9899285760.

The previous prime is 31446052819. The next prime is 31446052823. The reversal of 31446052820 is 2825064413.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31446052823) 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 47 ways as a sum of consecutive naturals, for example, 2426879 + ... + 2439801.

It is an arithmetic number, because the mean of its divisors is an integer number (577547712).

Almost surely, 2^31446052820 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 31446052820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41583435264).

31446052820 is an abundant number, since it is smaller than the sum of its proper divisors (51720817708).

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

31446052820 is a wasteful number, since it uses less digits than its factorization.

31446052820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13150 (or 13141 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The spelling of 31446052820 in words is "thirty-one billion, four hundred forty-six million, fifty-two thousand, eight hundred twenty".