20332111031 has 4 divisors (see below), whose sum is σ = 20618478864. Its totient is φ = 20045743200.

The previous prime is 20332110989. The next prime is 20332111043. The reversal of 20332111031 is 13011123302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20332111031 is a prime.

It is a super-2 number, since 2×20332111031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20332111931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143183810 + ... + 143183951.

It is an arithmetic number, because the mean of its divisors is an integer number (5154619716).

Almost surely, 2^20332111031 is an apocalyptic number.

20332111031 is a deficient number, since it is larger than the sum of its proper divisors (286367833).

20332111031 is an equidigital number, since it uses as much as digits as its factorization.

20332111031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286367832.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20332111031 its reverse (13011123302), we get a palindrome (33343234333).

The spelling of 20332111031 in words is "twenty billion, three hundred thirty-two million, one hundred eleven thousand, thirty-one".