31030321030 has 32 divisors (see below), whose sum is σ = 57826535040. Its totient is φ = 11974596480.

The previous prime is 31030321009. The next prime is 31030321031. The reversal of 31030321030 is 3012303013.

It is a junction number, because it is equal to n+sod(n) for n = 31030320995 and 31030321013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31030321031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328435 + ... + 412225.

It is an arithmetic number, because the mean of its divisors is an integer number (1807079220).

Almost surely, 2^31030321030 is an apocalyptic number.

31030321030 is a deficient number, since it is larger than the sum of its proper divisors (26796214010).

31030321030 is a wasteful number, since it uses less digits than its factorization.

31030321030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85104.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 31030321030 its reverse (3012303013), we get a palindrome (34042624043).

The spelling of 31030321030 in words is "thirty-one billion, thirty million, three hundred twenty-one thousand, thirty".