131333111 has 24 divisors (see below), whose sum is σ = 171112320. Its totient is φ = 98426016.

The previous prime is 131333089. The next prime is 131333131. The reversal of 131333111 is 111333131.

131333111 = 249² + 250² + ... + 742².

It is not a de Polignac number, because 131333111 - 2⁶ = 131333047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131333111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131333131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19556 + ... + 25398.

It is an arithmetic number, because the mean of its divisors is an integer number (7129680).

Almost surely, 2^131333111 is an apocalyptic number.

131333111 is a deficient number, since it is larger than the sum of its proper divisors (39779209).

131333111 is a wasteful number, since it uses less digits than its factorization.

131333111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5895 (or 5882 counting only the distinct ones).

The product of its digits is 81, while the sum is 17.

The square root of 131333111 is about 11460.0659247668. The cubic root of 131333111 is about 508.3054239865.

Adding to 131333111 its reverse (111333131), we get a palindrome (242666242).

The spelling of 131333111 in words is "one hundred thirty-one million, three hundred thirty-three thousand, one hundred eleven".