202423030031 has 2 divisors, whose sum is σ = 202423030032. Its totient is φ = 202423030030.

The previous prime is 202423030027. The next prime is 202423030063. The reversal of 202423030031 is 130030324202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202423030031 - 2² = 202423030027 is a prime.

It is a super-2 number, since 2×202423030031² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 202423029985 and 202423030012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202423030631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101211515015 + 101211515016.

It is an arithmetic number, because the mean of its divisors is an integer number (101211515016).

Almost surely, 2^202423030031 is an apocalyptic number.

202423030031 is a deficient number, since it is larger than the sum of its proper divisors (1).

202423030031 is an equidigital number, since it uses as much as digits as its factorization.

202423030031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 202423030031 its reverse (130030324202), we get a palindrome (332453354233).

The spelling of 202423030031 in words is "two hundred two billion, four hundred twenty-three million, thirty thousand, thirty-one".