31011330212 has 48 divisors (see below), whose sum is σ = 55270579392. Its totient is φ = 15222990720.

The previous prime is 31011330209. The next prime is 31011330223. The reversal of 31011330212 is 21203311013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36355178 + ... + 36356030.

It is an arithmetic number, because the mean of its divisors is an integer number (1151470404).

Almost surely, 2^31011330212 is an apocalyptic number.

It is an amenable number.

31011330212 is a deficient number, since it is larger than the sum of its proper divisors (24259249180).

31011330212 is a wasteful number, since it uses less digits than its factorization.

31011330212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628 (or 1626 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31011330212 its reverse (21203311013), we get a palindrome (52214641225).

The spelling of 31011330212 in words is "thirty-one billion, eleven million, three hundred thirty thousand, two hundred twelve".