129474183323 has 4 divisors (see below), whose sum is σ = 129517186728. Its totient is φ = 129431179920.

The previous prime is 129474183301. The next prime is 129474183331. The reversal of 129474183323 is 323381474921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323381474921 = 23 ⋅14060064127.

It is a cyclic number.

It is not a de Polignac number, because 129474183323 - 2²⁴ = 129457406107 is a prime.

It is a super-2 number, since 2×129474183323² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129474183353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21497186 + ... + 21503207.

It is an arithmetic number, because the mean of its divisors is an integer number (32379296682).

Almost surely, 2^129474183323 is an apocalyptic number.

129474183323 is a deficient number, since it is larger than the sum of its proper divisors (43003405).

129474183323 is an equidigital number, since it uses as much as digits as its factorization.

129474183323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43003404.

The product of its digits is 870912, while the sum is 47.

The spelling of 129474183323 in words is "one hundred twenty-nine billion, four hundred seventy-four million, one hundred eighty-three thousand, three hundred twenty-three".