20320031012 has 12 divisors (see below), whose sum is σ = 35562137436. Its totient is φ = 10159420320.

The previous prime is 20320030987. The next prime is 20320031041. The reversal of 20320031012 is 21013002302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15046947556 + 5273083456 = 122666^2 + 72616^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66983 + ... + 212430.

It is an arithmetic number, because the mean of its divisors is an integer number (2963511453).

Almost surely, 2^20320031012 is an apocalyptic number.

It is an amenable number.

20320031012 is a deficient number, since it is larger than the sum of its proper divisors (15242106424).

20320031012 is a wasteful number, since it uses less digits than its factorization.

20320031012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297598 (or 297596 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20320031012 its reverse (21013002302), we get a palindrome (41333033314).

The spelling of 20320031012 in words is "twenty billion, three hundred twenty million, thirty-one thousand, twelve".