321139422 has 12 divisors (see below), whose sum is σ = 695802120. Its totient is φ = 107046468.

The previous prime is 321139411. The next prime is 321139433. The reversal of 321139422 is 224931123.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (321139411) and next prime (321139433).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8920522 + ... + 8920557.

It is an arithmetic number, because the mean of its divisors is an integer number (57983510).

Almost surely, 2^321139422 is an apocalyptic number.

321139422 is an abundant number, since it is smaller than the sum of its proper divisors (374662698).

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

321139422 is a wasteful number, since it uses less digits than its factorization.

321139422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17841087 (or 17841084 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 321139422 is about 17920.3633333702. The cubic root of 321139422 is about 684.8012437722.

The spelling of 321139422 in words is "three hundred twenty-one million, one hundred thirty-nine thousand, four hundred twenty-two".