31213304121304 has 32 divisors (see below), whose sum is σ = 58546170936000. Its totient is φ = 15600992696352.

The previous prime is 31213304121269. The next prime is 31213304121313. The reversal of 31213304121304 is 40312140331213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357075667 + ... + 357163069.

It is an arithmetic number, because the mean of its divisors is an integer number (1829567841750).

Almost surely, 2^{31213304121304} is an apocalyptic number.

It is an amenable number.

31213304121304 is a deficient number, since it is larger than the sum of its proper divisors (27332866814696).

31213304121304 is a wasteful number, since it uses less digits than its factorization.

31213304121304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103087 (or 103083 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 31213304121304 its reverse (40312140331213), we get a palindrome (71525444452517).

The spelling of 31213304121304 in words is "thirty-one trillion, two hundred thirteen billion, three hundred four million, one hundred twenty-one thousand, three hundred four".