31232023020220 has 24 divisors (see below), whose sum is σ = 71549725465008. Its totient is φ = 11357099280000.

The previous prime is 31232023020203. The next prime is 31232023020221. The reversal of 31232023020220 is 2202032023213.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 31232023020191 and 31232023020200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31232023020221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70981870281 + ... + 70981870720.

It is an arithmetic number, because the mean of its divisors is an integer number (2981238561042).

Almost surely, 2^{31232023020220} is an apocalyptic number.

It is an amenable number.

31232023020220 is an abundant number, since it is smaller than the sum of its proper divisors (40317702444788).

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

31232023020220 is a wasteful number, since it uses less digits than its factorization.

31232023020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141963741021 (or 141963741019 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 31232023020220 its reverse (2202032023213), we get a palindrome (33434055043433).

The spelling of 31232023020220 in words is "thirty-one trillion, two hundred thirty-two billion, twenty-three million, twenty thousand, two hundred twenty".