20123313232 has 20 divisors (see below), whose sum is σ = 42533366976. Its totient is φ = 9146960480.

The previous prime is 20123313187. The next prime is 20123313271. The reversal of 20123313232 is 23231332102.

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

It is a congruent number.

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, 57168328 + ... + 57168679.

Almost surely, 2^20123313232 is an apocalyptic number.

20123313232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20123313232 is an abundant number, since it is smaller than the sum of its proper divisors (22410053744).

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

20123313232 is a wasteful number, since it uses less digits than its factorization.

20123313232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114337026 (or 114337020 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20123313232 its reverse (23231332102), we get a palindrome (43354645334).

The spelling of 20123313232 in words is "twenty billion, one hundred twenty-three million, three hundred thirteen thousand, two hundred thirty-two".