123315051229 has 2 divisors, whose sum is σ = 123315051230. Its totient is φ = 123315051228.

The previous prime is 123315051193. The next prime is 123315051253. The reversal of 123315051229 is 922150513321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101953767204 + 21361284025 = 319302^2 + 146155^2 .

It is a cyclic number.

It is not a de Polignac number, because 123315051229 - 2²⁵ = 123281496797 is a prime.

It is a super-2 number, since 2×123315051229² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123315051194 and 123315051203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123315051269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61657525614 + 61657525615.

It is an arithmetic number, because the mean of its divisors is an integer number (61657525615).

Almost surely, 2^123315051229 is an apocalyptic number.

It is an amenable number.

123315051229 is a deficient number, since it is larger than the sum of its proper divisors (1).

123315051229 is an equidigital number, since it uses as much as digits as its factorization.

123315051229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 34.

The spelling of 123315051229 in words is "one hundred twenty-three billion, three hundred fifteen million, fifty-one thousand, two hundred twenty-nine".