321012693 has 32 divisors (see below), whose sum is σ = 482918400. Its totient is φ = 210733488.

The previous prime is 321012647. The next prime is 321012701. The reversal of 321012693 is 396210123.

It is not a de Polignac number, because 321012693 - 2⁸ = 321012437 is a prime.

It is a super-2 number, since 2×321012693² = 206098298134224498, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321012623) 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 31 ways as a sum of consecutive naturals, for example, 613530 + ... + 614052.

It is an arithmetic number, because the mean of its divisors is an integer number (15091200).

Almost surely, 2^321012693 is an apocalyptic number.

It is an amenable number.

321012693 is a deficient number, since it is larger than the sum of its proper divisors (161905707).

321012693 is a wasteful number, since it uses less digits than its factorization.

321012693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838 (or 832 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 321012693 is about 17916.8270907547. The cubic root of 321012693 is about 684.7111524816.

The spelling of 321012693 in words is "three hundred twenty-one million, twelve thousand, six hundred ninety-three".