321123011 has 8 divisors (see below), whose sum is σ = 358463424. Its totient is φ = 285140520.

The previous prime is 321123007. The next prime is 321123067. The reversal of 321123011 is 110321123.

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 321123011 - 2² = 321123007 is a prime.

It is a super-2 number, since 2×321123011² = 206239976387412242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321123091) 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, 338981 + ... + 339926.

It is an arithmetic number, because the mean of its divisors is an integer number (44807928).

Almost surely, 2^321123011 is an apocalyptic number.

321123011 is a deficient number, since it is larger than the sum of its proper divisors (37340413).

321123011 is a wasteful number, since it uses less digits than its factorization.

321123011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678961.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 321123011 is about 17919.9054405987. The cubic root of 321123011 is about 684.7895785744.

Adding to 321123011 its reverse (110321123), we get a palindrome (431444134).

The spelling of 321123011 in words is "three hundred twenty-one million, one hundred twenty-three thousand, eleven".