20230031 has 2 divisors, whose sum is σ = 20230032. Its totient is φ = 20230030.

The previous prime is 20229991. The next prime is 20230037. The reversal of 20230031 is 13003202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20230031 - 2¹⁰ = 20229007 is a prime.

It is a super-2 number, since 2×20230031² = 818508308521922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20229994 and 20230021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20230037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10115015 + 10115016.

It is an arithmetic number, because the mean of its divisors is an integer number (10115016).

Almost surely, 2^20230031 is an apocalyptic number.

20230031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20230031 is an equidigital number, since it uses as much as digits as its factorization.

20230031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 20230031 is about 4497.7806749551. The cubic root of 20230031 is about 272.4784641960.

Adding to 20230031 its reverse (13003202), we get a palindrome (33233233).

The spelling of 20230031 in words is "twenty million, two hundred thirty thousand, thirty-one".