123113151251 has 2 divisors, whose sum is σ = 123113151252. Its totient is φ = 123113151250.

The previous prime is 123113151247. The next prime is 123113151283. The reversal of 123113151251 is 152151311321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123113151251 - 2² = 123113151247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123113151251.

It is not a weakly prime, because it can be changed into another prime (123116151251) 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, 61556575625 + 61556575626.

It is an arithmetic number, because the mean of its divisors is an integer number (61556575626).

Almost surely, 2^123113151251 is an apocalyptic number.

123113151251 is a deficient number, since it is larger than the sum of its proper divisors (1).

123113151251 is an equidigital number, since it uses as much as digits as its factorization.

123113151251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 900, while the sum is 26.

Adding to 123113151251 its reverse (152151311321), we get a palindrome (275264462572).

The spelling of 123113151251 in words is "one hundred twenty-three billion, one hundred thirteen million, one hundred fifty-one thousand, two hundred fifty-one".