123030020231 has 2 divisors, whose sum is σ = 123030020232. Its totient is φ = 123030020230.

The previous prime is 123030020227. The next prime is 123030020263. The reversal of 123030020231 is 132020030321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123030020231 - 2² = 123030020227 is a prime.

It is a super-2 number, since 2×123030020231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123030020831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61515010115 + 61515010116.

It is an arithmetic number, because the mean of its divisors is an integer number (61515010116).

Almost surely, 2^123030020231 is an apocalyptic number.

123030020231 is a deficient number, since it is larger than the sum of its proper divisors (1).

123030020231 is an equidigital number, since it uses as much as digits as its factorization.

123030020231 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 123030020231 its reverse (132020030321), we get a palindrome (255050050552).

The spelling of 123030020231 in words is "one hundred twenty-three billion, thirty million, twenty thousand, two hundred thirty-one".