20231031432 has 64 divisors (see below), whose sum is σ = 53388288000. Its totient is φ = 6370899264.

The previous prime is 20231031397. The next prime is 20231031463. The reversal of 20231031432 is 23413013202.

It is a junction number, because it is equal to n+sod(n) for n = 20231031399 and 20231031408.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101913 + ... + 225495.

It is an arithmetic number, because the mean of its divisors is an integer number (834192000).

Almost surely, 2^20231031432 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 20231031432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26694144000).

20231031432 is an abundant number, since it is smaller than the sum of its proper divisors (33157256568).

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

20231031432 is a wasteful number, since it uses less digits than its factorization.

20231031432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123970 (or 123966 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20231031432 its reverse (23413013202), we get a palindrome (43644044634).

The spelling of 20231031432 in words is "twenty billion, two hundred thirty-one million, thirty-one thousand, four hundred thirty-two".