10123031291 has 2 divisors, whose sum is σ = 10123031292. Its totient is φ = 10123031290.

The previous prime is 10123031287. The next prime is 10123031297. The reversal of 10123031291 is 19213032101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10123031291 - 2² = 10123031287 is a prime.

It is not a weakly prime, because it can be changed into another prime (10123031297) 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, 5061515645 + 5061515646.

It is an arithmetic number, because the mean of its divisors is an integer number (5061515646).

Almost surely, 2^10123031291 is an apocalyptic number.

10123031291 is a deficient number, since it is larger than the sum of its proper divisors (1).

10123031291 is an equidigital number, since it uses as much as digits as its factorization.

10123031291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 10123031291 its reverse (19213032101), we get a palindrome (29336063392).

It can be divided in two parts, 1012 and 3031291, that added together give a palindrome (3032303).

The spelling of 10123031291 in words is "ten billion, one hundred twenty-three million, thirty-one thousand, two hundred ninety-one".