131440111 has 4 divisors (see below), whose sum is σ = 143389224. Its totient is φ = 119491000.

The previous prime is 131440091. The next prime is 131440117. The reversal of 131440111 is 111044131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111044131 = 11 ⋅10094921.

It is a cyclic number.

It is not a de Polignac number, because 131440111 - 2⁵ = 131440079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131440117) 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, 5974540 + ... + 5974561.

It is an arithmetic number, because the mean of its divisors is an integer number (35847306).

Almost surely, 2^131440111 is an apocalyptic number.

131440111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131440111 is a deficient number, since it is larger than the sum of its proper divisors (11949113).

131440111 is a wasteful number, since it uses less digits than its factorization.

131440111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11949112.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 131440111 is about 11464.7333593067. The cubic root of 131440111 is about 508.4434290844.

Adding to 131440111 its reverse (111044131), we get a palindrome (242484242).

The spelling of 131440111 in words is "one hundred thirty-one million, four hundred forty thousand, one hundred eleven".