331212423 has 16 divisors (see below), whose sum is σ = 456679296. Its totient is φ = 213401760.

The previous prime is 331212421. The next prime is 331212439. The reversal of 331212423 is 324212133.

It is not a de Polignac number, because 331212423 - 2¹ = 331212421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 331212423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331212421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4893 + ... + 26198.

It is an arithmetic number, because the mean of its divisors is an integer number (28542456).

Almost surely, 2^331212423 is an apocalyptic number.

331212423 is a deficient number, since it is larger than the sum of its proper divisors (125466873).

331212423 is a wasteful number, since it uses less digits than its factorization.

331212423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31214.

The product of its digits is 864, while the sum is 21.

The square root of 331212423 is about 18199.2423743408. The cubic root of 331212423 is about 691.8875872675.

Adding to 331212423 its reverse (324212133), we get a palindrome (655424556).

The spelling of 331212423 in words is "three hundred thirty-one million, two hundred twelve thousand, four hundred twenty-three".