20020311232 has 28 divisors (see below), whose sum is σ = 39738214656. Its totient is φ = 10007532800.

The previous prime is 20020311187. The next prime is 20020311251. The reversal of 20020311232 is 23211302002.

It is a super-2 number, since 2×20020311232² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217857 + ... + 295807.

It is an arithmetic number, because the mean of its divisors is an integer number (1419221952).

Almost surely, 2^20020311232 is an apocalyptic number.

It is an amenable number.

20020311232 is a deficient number, since it is larger than the sum of its proper divisors (19717903424).

20020311232 is an equidigital number, since it uses as much as digits as its factorization.

20020311232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81976 (or 81966 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20020311232 its reverse (23211302002), we get a palindrome (43231613234).

The spelling of 20020311232 in words is "twenty billion, twenty million, three hundred eleven thousand, two hundred thirty-two".