20113100133231 has 16 divisors (see below), whose sum is σ = 30648989875968. Its totient is φ = 11493028948800.

The previous prime is 20113100133223. The next prime is 20113100133271. The reversal of 20113100133231 is 13233100131102.

It is a happy number.

It is not a de Polignac number, because 20113100133231 - 2³ = 20113100133223 is a prime.

It is a super-2 number, since 2×20113100133231² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 20113100133198 and 20113100133207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113100133271) 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, 5679465 + ... + 8513666.

It is an arithmetic number, because the mean of its divisors is an integer number (1915561867248).

Almost surely, 2^{20113100133231} is an apocalyptic number.

20113100133231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20113100133231 is a deficient number, since it is larger than the sum of its proper divisors (10535889742737).

20113100133231 is a wasteful number, since it uses less digits than its factorization.

20113100133231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14260622.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 20113100133231 its reverse (13233100131102), we get a palindrome (33346200264333).

The spelling of 20113100133231 in words is "twenty trillion, one hundred thirteen billion, one hundred million, one hundred thirty-three thousand, two hundred thirty-one".