31222340012 has 24 divisors (see below), whose sum is σ = 60368517216. Its totient is φ = 14054044928.

The previous prime is 31222340003. The next prime is 31222340021. The reversal of 31222340012 is 21004322213.

It is an interprime number because it is at equal distance from previous prime (31222340003) and next prime (31222340021).

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, 9980003 + ... + 9983130.

It is an arithmetic number, because the mean of its divisors is an integer number (2515354884).

Almost surely, 2^31222340012 is an apocalyptic number.

It is an amenable number.

31222340012 is a deficient number, since it is larger than the sum of its proper divisors (29146177204).

31222340012 is a wasteful number, since it uses less digits than its factorization.

31222340012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19963177 (or 19963175 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 31222340012 its reverse (21004322213), we get a palindrome (52226662225).

The spelling of 31222340012 in words is "thirty-one billion, two hundred twenty-two million, three hundred forty thousand, twelve".