20031132111 has 8 divisors (see below), whose sum is σ = 26712935040. Its totient is φ = 13351708632.

The previous prime is 20031132089. The next prime is 20031132131. The reversal of 20031132111 is 11123113002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20031132111 - 2¹⁵ = 20031099343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20031132131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 575125 + ... + 608958.

It is an arithmetic number, because the mean of its divisors is an integer number (3339116880).

Almost surely, 2^20031132111 is an apocalyptic number.

20031132111 is a deficient number, since it is larger than the sum of its proper divisors (6681802929).

20031132111 is a wasteful number, since it uses less digits than its factorization.

20031132111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189725.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 20031132111 its reverse (11123113002), we get a palindrome (31154245113).

The spelling of 20031132111 in words is "twenty billion, thirty-one million, one hundred thirty-two thousand, one hundred eleven".