20031132323 has 12 divisors (see below), whose sum is σ = 20782992888. Its totient is φ = 19294947360.

The previous prime is 20031132307. The next prime is 20031132349. The reversal of 20031132323 is 32323113002.

It is not a de Polignac number, because 20031132323 - 2⁴ = 20031132307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20031132295 and 20031132304.

It is not an unprimeable number, because it can be changed into a prime (20031132923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 216740 + ... + 295022.

It is an arithmetic number, because the mean of its divisors is an integer number (1731916074).

Almost surely, 2^20031132323 is an apocalyptic number.

20031132323 is a deficient number, since it is larger than the sum of its proper divisors (751860565).

20031132323 is an frugal number, since it uses more digits than its factorization.

20031132323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78482 (or 78403 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20031132323 its reverse (32323113002), we get a palindrome (52354245325).

The spelling of 20031132323 in words is "twenty billion, thirty-one million, one hundred thirty-two thousand, three hundred twenty-three".