1323172104 has 32 divisors (see below), whose sum is σ = 3322516320. Its totient is φ = 439112576.

The previous prime is 1323172087. The next prime is 1323172121. The reversal of 1323172104 is 4012713231.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1323172087) and next prime (1323172121).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115989 + ... + 126884.

It is an arithmetic number, because the mean of its divisors is an integer number (103828635).

Almost surely, 2^1323172104 is an apocalyptic number.

It is an amenable number.

1323172104 is an abundant number, since it is smaller than the sum of its proper divisors (1999344216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1323172104 is a wasteful number, since it uses less digits than its factorization.

1323172104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243109 (or 243105 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 1323172104 is about 36375.4326984573. The cubic root of 1323172104 is about 1097.8393134486.

Adding to 1323172104 its reverse (4012713231), we get a palindrome (5335885335).

It can be divided in two parts, 132317 and 2104, that added together give a triangular number (134421 = T₅₁₈).

The spelling of 1323172104 in words is "one billion, three hundred twenty-three million, one hundred seventy-two thousand, one hundred four".