31530026023 has 2 divisors, whose sum is σ = 31530026024. Its totient is φ = 31530026022.

The previous prime is 31530025993. The next prime is 31530026029. The reversal of 31530026023 is 32062003513.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (32062003513) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31530026023 is a prime.

It is a super-2 number, since 2×31530026023² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31530026029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15765013011 + 15765013012.

It is an arithmetic number, because the mean of its divisors is an integer number (15765013012).

Almost surely, 2^31530026023 is an apocalyptic number.

31530026023 is a deficient number, since it is larger than the sum of its proper divisors (1).

31530026023 is an equidigital number, since it uses as much as digits as its factorization.

31530026023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 25.

Adding to 31530026023 its reverse (32062003513), we get a palindrome (63592029536).

The spelling of 31530026023 in words is "thirty-one billion, five hundred thirty million, twenty-six thousand, twenty-three".