20311012130312 has 16 divisors (see below), whose sum is σ = 38241169107900. Its totient is φ = 10113367034880.

The previous prime is 20311012130263. The next prime is 20311012130329. The reversal of 20311012130312 is 21303121011302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20296881102436 + 14131027876 = 4505206^2 + 118874^2 .

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, 5267376737 + ... + 5267380592.

Almost surely, 2^{20311012130312} is an apocalyptic number.

It is an amenable number.

20311012130312 is a deficient number, since it is larger than the sum of its proper divisors (17930156977588).

20311012130312 is a wasteful number, since it uses less digits than its factorization.

20311012130312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10534757576 (or 10534757572 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 20311012130312 its reverse (21303121011302), we get a palindrome (41614133141614).

The spelling of 20311012130312 in words is "twenty trillion, three hundred eleven billion, twelve million, one hundred thirty thousand, three hundred twelve".