321111402 has 16 divisors (see below), whose sum is σ = 680000832. Its totient is φ = 100740800.

The previous prime is 321111397. The next prime is 321111407. The reversal of 321111402 is 204111123.

It is an interprime number because it is at equal distance from previous prime (321111397) and next prime (321111407).

It is a super-2 number, since 2×321111402² = 206225064988811208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321111407) 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, 1573974 + ... + 1574177.

It is an arithmetic number, because the mean of its divisors is an integer number (42500052).

Almost surely, 2^321111402 is an apocalyptic number.

321111402 is an abundant number, since it is smaller than the sum of its proper divisors (358889430).

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

321111402 is a wasteful number, since it uses less digits than its factorization.

321111402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3148173.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 321111402 is about 17919.5815241316. The cubic root of 321111402 is about 684.7813264740.

Adding to 321111402 its reverse (204111123), we get a palindrome (525222525).

The spelling of 321111402 in words is "three hundred twenty-one million, one hundred eleven thousand, four hundred two".