31302020232 has 192 divisors, whose sum is σ = 100485964800. Its totient is φ = 8612835840.

The previous prime is 31302020201. The next prime is 31302020251. The reversal of 31302020232 is 23202020313.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 47 ways as a sum of consecutive naturals, for example, 6150793 + ... + 6155879.

It is an arithmetic number, because the mean of its divisors is an integer number (523364400).

Almost surely, 2^31302020232 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 31302020232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50242982400).

31302020232 is an abundant number, since it is smaller than the sum of its proper divisors (69183944568).

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

31302020232 is a wasteful number, since it uses less digits than its factorization.

31302020232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5556 (or 5549 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 31302020232 its reverse (23202020313), we get a palindrome (54504040545).

The spelling of 31302020232 in words is "thirty-one billion, three hundred two million, twenty thousand, two hundred thirty-two".