31012221002 has 32 divisors (see below), whose sum is σ = 55980842880. Its totient is φ = 12587166720.

The previous prime is 31012220957. The next prime is 31012221029. The reversal of 31012221002 is 20012221013.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 837602 + ... + 873842.

It is an arithmetic number, because the mean of its divisors is an integer number (1749401340).

Almost surely, 2^31012221002 is an apocalyptic number.

31012221002 is a deficient number, since it is larger than the sum of its proper divisors (24968621878).

31012221002 is a wasteful number, since it uses less digits than its factorization.

31012221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39486.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 31012221002 its reverse (20012221013), we get a palindrome (51024442015).

The spelling of 31012221002 in words is "thirty-one billion, twelve million, two hundred twenty-one thousand, two".