31220130023 has 2 divisors, whose sum is σ = 31220130024. Its totient is φ = 31220130022.

The previous prime is 31220129981. The next prime is 31220130083. The reversal of 31220130023 is 32003102213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31220130023 - 2²⁰ = 31219081447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31220129983 and 31220130010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31220130083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15610065011 + 15610065012.

It is an arithmetic number, because the mean of its divisors is an integer number (15610065012).

Almost surely, 2^31220130023 is an apocalyptic number.

31220130023 is a deficient number, since it is larger than the sum of its proper divisors (1).

31220130023 is an equidigital number, since it uses as much as digits as its factorization.

31220130023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31220130023 its reverse (32003102213), we get a palindrome (63223232236).

The spelling of 31220130023 in words is "thirty-one billion, two hundred twenty million, one hundred thirty thousand, twenty-three".