321431123 has 8 divisors (see below), whose sum is σ = 347392416. Its totient is φ = 295646400.

The previous prime is 321431119. The next prime is 321431147. The reversal of 321431123 is 321134123.

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 321431123 - 2² = 321431119 is a prime.

It is a super-2 number, since 2×321431123² = 206635933666082258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321431095 and 321431104.

It is not an unprimeable number, because it can be changed into a prime (321431023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40343 + ... + 47648.

It is an arithmetic number, because the mean of its divisors is an integer number (43424052).

Almost surely, 2^321431123 is an apocalyptic number.

321431123 is a deficient number, since it is larger than the sum of its proper divisors (25961293).

321431123 is a wasteful number, since it uses less digits than its factorization.

321431123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88285.

The product of its digits is 432, while the sum is 20.

The square root of 321431123 is about 17928.5002998020. The cubic root of 321431123 is about 685.0085231681.

Adding to 321431123 its reverse (321134123), we get a palindrome (642565246).

The spelling of 321431123 in words is "three hundred twenty-one million, four hundred thirty-one thousand, one hundred twenty-three".