20330232031 has 4 divisors (see below), whose sum is σ = 20395602864. Its totient is φ = 20264861200.

The previous prime is 20330232023. The next prime is 20330232049. The reversal of 20330232031 is 13023203302.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13023203302 = 2 ⋅6511601651.

It is a cyclic number.

It is not a de Polignac number, because 20330232031 - 2³ = 20330232023 is a prime.

It is a super-2 number, since 2×20330232031² (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 (20330232001) 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, 32684950 + ... + 32685571.

It is an arithmetic number, because the mean of its divisors is an integer number (5098900716).

Almost surely, 2^20330232031 is an apocalyptic number.

20330232031 is a deficient number, since it is larger than the sum of its proper divisors (65370833).

20330232031 is an equidigital number, since it uses as much as digits as its factorization.

20330232031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65370832.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 20330232031 its reverse (13023203302), we get a palindrome (33353435333).

The spelling of 20330232031 in words is "twenty billion, three hundred thirty million, two hundred thirty-two thousand, thirty-one".