323151421 has 4 divisors (see below), whose sum is σ = 323472700. Its totient is φ = 322830144.

The previous prime is 323151383. The next prime is 323151431. The reversal of 323151421 is 124151323.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45562500 + 277588921 = 6750^2 + 16661^2 .

It is a cyclic number.

It is not a de Polignac number, because 323151421 - 2⁷ = 323151293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 323151392 and 323151401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323151431) 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, 159126 + ... + 161143.

It is an arithmetic number, because the mean of its divisors is an integer number (80868175).

Almost surely, 2^323151421 is an apocalyptic number.

It is an amenable number.

323151421 is a deficient number, since it is larger than the sum of its proper divisors (321279).

323151421 is a wasteful number, since it uses less digits than its factorization.

323151421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321278.

The product of its digits is 720, while the sum is 22.

The square root of 323151421 is about 17976.4129069178. The cubic root of 323151421 is about 686.2284037163.

The spelling of 323151421 in words is "three hundred twenty-three million, one hundred fifty-one thousand, four hundred twenty-one".