20311133231303 has 16 divisors (see below), whose sum is σ = 20560519980000. Its totient is φ = 20062227220992.

The previous prime is 20311133231297. The next prime is 20311133231309. The reversal of 20311133231303 is 30313233111302.

It is an interprime number because it is at equal distance from previous prime (20311133231297) and next prime (20311133231309).

It is a cyclic number.

It is not a de Polignac number, because 20311133231303 - 2³⁸ = 20036255324359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311133231309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376195676 + ... + 376249662.

It is an arithmetic number, because the mean of its divisors is an integer number (1285032498750).

Almost surely, 2^{20311133231303} is an apocalyptic number.

20311133231303 is a deficient number, since it is larger than the sum of its proper divisors (249386748697).

20311133231303 is a wasteful number, since it uses less digits than its factorization.

20311133231303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58354.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 20311133231303 its reverse (30313233111302), we get a palindrome (50624366342605).

The spelling of 20311133231303 in words is "twenty trillion, three hundred eleven billion, one hundred thirty-three million, two hundred thirty-one thousand, three hundred three".