123388951229 has 8 divisors (see below), whose sum is σ = 123741279192. Its totient is φ = 123037116480.

The previous prime is 123388951201. The next prime is 123388951331. The reversal of 123388951229 is 922159883321.

It can be written as a sum of positive squares in 4 ways, for example, as 10947436900 + 112441514329 = 104630^2 + 335323^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123388951229 - 2⁸ = 123388950973 is a prime.

It is a super-2 number, since 2×123388951229² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123388950229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380687 + ... + 625859.

It is an arithmetic number, because the mean of its divisors is an integer number (15467659899).

Almost surely, 2^123388951229 is an apocalyptic number.

It is an amenable number.

123388951229 is a deficient number, since it is larger than the sum of its proper divisors (352327963).

123388951229 is an equidigital number, since it uses as much as digits as its factorization.

123388951229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246607.

The product of its digits is 1866240, while the sum is 53.

The spelling of 123388951229 in words is "one hundred twenty-three billion, three hundred eighty-eight million, nine hundred fifty-one thousand, two hundred twenty-nine".