321131242 has 8 divisors (see below), whose sum is σ = 481773600. Its totient is φ = 160540044.

The previous prime is 321131231. The next prime is 321131243. The reversal of 321131242 is 242131123.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (321131243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14859 + ... + 29377.

It is an arithmetic number, because the mean of its divisors is an integer number (60221700).

Almost surely, 2^321131242 is an apocalyptic number.

321131242 is a deficient number, since it is larger than the sum of its proper divisors (160642358).

321131242 is a wasteful number, since it uses less digits than its factorization.

321131242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25580.

The product of its digits is 288, while the sum is 19.

The square root of 321131242 is about 17920.1350999372. The cubic root of 321131242 is about 684.7954293488.

Adding to 321131242 its reverse (242131123), we get a palindrome (563262365).

It can be divided in two parts, 3211 and 31242, that added together give a triangular number (34453 = T₂₆₂).

The spelling of 321131242 in words is "three hundred twenty-one million, one hundred thirty-one thousand, two hundred forty-two".