131115455 has 4 divisors (see below), whose sum is σ = 157338552. Its totient is φ = 104892360.

The previous prime is 131115451. The next prime is 131115463. The reversal of 131115455 is 554511131.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 131115455 - 2² = 131115451 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 (131115451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13111541 + ... + 13111550.

It is an arithmetic number, because the mean of its divisors is an integer number (39334638).

Almost surely, 2^131115455 is an apocalyptic number.

131115455 is a deficient number, since it is larger than the sum of its proper divisors (26223097).

131115455 is an equidigital number, since it uses as much as digits as its factorization.

131115455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26223096.

The product of its digits is 1500, while the sum is 26.

The square root of 131115455 is about 11450.5657065492. The cubic root of 131115455 is about 508.0244669122.

Adding to 131115455 its reverse (554511131), we get a palindrome (685626586).

The spelling of 131115455 in words is "one hundred thirty-one million, one hundred fifteen thousand, four hundred fifty-five".