201131113 has 4 divisors (see below), whose sum is σ = 209875968. Its totient is φ = 192386260.

The previous prime is 201131083. The next prime is 201131123. The reversal of 201131113 is 311131102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 201131113 - 2²⁵ = 167576681 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201131093 and 201131102.

It is not an unprimeable number, because it can be changed into a prime (201131123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4372393 + ... + 4372438.

It is an arithmetic number, because the mean of its divisors is an integer number (52468992).

Almost surely, 2^201131113 is an apocalyptic number.

201131113 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

201131113 is a deficient number, since it is larger than the sum of its proper divisors (8744855).

201131113 is an equidigital number, since it uses as much as digits as its factorization.

201131113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8744854.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 201131113 is about 14182.0701239276. The cubic root of 201131113 is about 585.9039406197.

Adding to 201131113 its reverse (311131102), we get a palindrome (512262215).

It can be divided in two parts, 2011 and 31113, that added together give a square (33124 = 182²).

The spelling of 201131113 in words is "two hundred one million, one hundred thirty-one thousand, one hundred thirteen".