31004321212 has 12 divisors (see below), whose sum is σ = 54737718336. Its totient is φ = 15364973120.

The previous prime is 31004321207. The next prime is 31004321213. The reversal of 31004321212 is 21212340013.

It is a happy number.

It is a super-2 number, since 2×31004321212² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31004321212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31004321213) 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, 34296364 + ... + 34297267.

It is an arithmetic number, because the mean of its divisors is an integer number (4561476528).

Almost surely, 2^31004321212 is an apocalyptic number.

It is an amenable number.

31004321212 is a deficient number, since it is larger than the sum of its proper divisors (23733397124).

31004321212 is a wasteful number, since it uses less digits than its factorization.

31004321212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68593748 (or 68593746 counting only the distinct ones).

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

Adding to 31004321212 its reverse (21212340013), we get a palindrome (52216661225).

The spelling of 31004321212 in words is "thirty-one billion, four million, three hundred twenty-one thousand, two hundred twelve".