31123413212 has 6 divisors (see below), whose sum is σ = 54465973128. Its totient is φ = 15561706604.

The previous prime is 31123413151. The next prime is 31123413227. The reversal of 31123413212 is 21231432113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3890426648 + ... + 3890426655.

It is an arithmetic number, because the mean of its divisors is an integer number (9077662188).

Almost surely, 2^31123413212 is an apocalyptic number.

It is an amenable number.

31123413212 is a deficient number, since it is larger than the sum of its proper divisors (23342559916).

31123413212 is a wasteful number, since it uses less digits than its factorization.

31123413212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7780853307 (or 7780853305 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

Adding to 31123413212 its reverse (21231432113), we get a palindrome (52354845325).

The spelling of 31123413212 in words is "thirty-one billion, one hundred twenty-three million, four hundred thirteen thousand, two hundred twelve".