20231020031 has 2 divisors, whose sum is σ = 20231020032. Its totient is φ = 20231020030.

The previous prime is 20231020021. The next prime is 20231020037. The reversal of 20231020031 is 13002013202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20231020031 - 2¹⁰ = 20231019007 is a prime.

It is a super-2 number, since 2×20231020031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20231019988 and 20231020015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20231020037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10115510015 + 10115510016.

It is an arithmetic number, because the mean of its divisors is an integer number (10115510016).

Almost surely, 2^20231020031 is an apocalyptic number.

20231020031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20231020031 is an equidigital number, since it uses as much as digits as its factorization.

20231020031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20231020031 its reverse (13002013202), we get a palindrome (33233033233).

The spelling of 20231020031 in words is "twenty billion, two hundred thirty-one million, twenty thousand, thirty-one".