20311132100203 has 32 divisors (see below), whose sum is σ = 23806678896000. Its totient is φ = 16968771495936.

The previous prime is 20311132100153. The next prime is 20311132100243. The reversal of 20311132100203 is 30200123111302.

It is a cyclic number.

It is not a de Polignac number, because 20311132100203 - 2¹³ = 20311132092011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20311132100243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34538275 + ... + 35121427.

It is an arithmetic number, because the mean of its divisors is an integer number (743958715500).

Almost surely, 2^{20311132100203} is an apocalyptic number.

20311132100203 is a deficient number, since it is larger than the sum of its proper divisors (3495546795797).

20311132100203 is a wasteful number, since it uses less digits than its factorization.

20311132100203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583831.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20311132100203 its reverse (30200123111302), we get a palindrome (50511255211505).

The spelling of 20311132100203 in words is "twenty trillion, three hundred eleven billion, one hundred thirty-two million, one hundred thousand, two hundred three".