20131055012 has 6 divisors (see below), whose sum is σ = 35229346278. Its totient is φ = 10065527504.

The previous prime is 20131055011. The next prime is 20131055033. The reversal of 20131055012 is 21055013102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13092851776 + 7038203236 = 114424^2 + 83894^2 .

It is not an unprimeable number, because it can be changed into a prime (20131055011) 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 as a sum of consecutive naturals, namely, 2516381873 + ... + 2516381880.

It is an arithmetic number, because the mean of its divisors is an integer number (5871557713).

Almost surely, 2^20131055012 is an apocalyptic number.

It is an amenable number.

20131055012 is a deficient number, since it is larger than the sum of its proper divisors (15098291266).

20131055012 is a wasteful number, since it uses less digits than its factorization.

20131055012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5032763757 (or 5032763755 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

Adding to 20131055012 its reverse (21055013102), we get a palindrome (41186068114).

The spelling of 20131055012 in words is "twenty billion, one hundred thirty-one million, fifty-five thousand, twelve".