131345111 has 16 divisors (see below), whose sum is σ = 145753344. Its totient is φ = 117727104.

The previous prime is 131345107. The next prime is 131345113. The reversal of 131345111 is 111543131.

It is a cyclic number.

It is not a de Polignac number, because 131345111 - 2² = 131345107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131345113) 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, 110060 + ... + 111246.

It is an arithmetic number, because the mean of its divisors is an integer number (9109584).

Almost surely, 2^131345111 is an apocalyptic number.

131345111 is a deficient number, since it is larger than the sum of its proper divisors (14408233).

131345111 is a wasteful number, since it uses less digits than its factorization.

131345111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510.

The product of its digits is 180, while the sum is 20.

The square root of 131345111 is about 11460.5894700055. The cubic root of 131345111 is about 508.3209049247.

Adding to 131345111 its reverse (111543131), we get a palindrome (242888242).

The spelling of 131345111 in words is "one hundred thirty-one million, three hundred forty-five thousand, one hundred eleven".