31212113224304 has 20 divisors (see below), whose sum is σ = 60485296925376. Its totient is φ = 15603004340352.

The previous prime is 31212113224297. The next prime is 31212113224399. The reversal of 31212113224304 is 40342231121213.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190682624 + ... + 190846239.

Almost surely, 2^{31212113224304} is an apocalyptic number.

It is an amenable number.

31212113224304 is a deficient number, since it is larger than the sum of its proper divisors (29273183701072).

31212113224304 is a wasteful number, since it uses less digits than its factorization.

31212113224304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381533984 (or 381533978 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 31212113224304 its reverse (40342231121213), we get a palindrome (71554344345517).

The spelling of 31212113224304 in words is "thirty-one trillion, two hundred twelve billion, one hundred thirteen million, two hundred twenty-four thousand, three hundred four".