20311231232103 has 8 divisors (see below), whose sum is σ = 30950447591808. Its totient is φ = 11606417846904.

The previous prime is 20311231232023. The next prime is 20311231232111. The reversal of 20311231232103 is 30123213211302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20311231232103 - 2¹⁸ = 20311230969959 is a prime.

It is a super-2 number, since 2×20311231232103² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311231222103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 483600743601 + ... + 483600743642.

It is an arithmetic number, because the mean of its divisors is an integer number (3868805948976).

Almost surely, 2^{20311231232103} is an apocalyptic number.

20311231232103 is a deficient number, since it is larger than the sum of its proper divisors (10639216359705).

20311231232103 is an equidigital number, since it uses as much as digits as its factorization.

20311231232103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967201487253.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 20311231232103 its reverse (30123213211302), we get a palindrome (50434444443405).

The spelling of 20311231232103 in words is "twenty trillion, three hundred eleven billion, two hundred thirty-one million, two hundred thirty-two thousand, one hundred three".