331231426 has 8 divisors (see below), whose sum is σ = 497678400. Its totient is φ = 165338628.

The previous prime is 331231423. The next prime is 331231463. The reversal of 331231426 is 624132133.

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

It is a self number, because there is not a number n which added to its sum of digits gives 331231426.

It is not an unprimeable number, because it can be changed into a prime (331231421) 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, 137046 + ... + 139441.

It is an arithmetic number, because the mean of its divisors is an integer number (62209800).

Almost surely, 2^331231426 is an apocalyptic number.

331231426 is a deficient number, since it is larger than the sum of its proper divisors (166446974).

331231426 is a wasteful number, since it uses less digits than its factorization.

331231426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277088.

The product of its digits is 2592, while the sum is 25.

The square root of 331231426 is about 18199.7644490252. The cubic root of 331231426 is about 691.9008191468.

Adding to 331231426 its reverse (624132133), we get a palindrome (955363559).

The spelling of 331231426 in words is "three hundred thirty-one million, two hundred thirty-one thousand, four hundred twenty-six".