131311455 has 16 divisors (see below), whose sum is σ = 229198464. Its totient is φ = 63666080.

The previous prime is 131311423. The next prime is 131311457. The reversal of 131311455 is 554113131.

It is not a de Polignac number, because 131311455 - 2⁵ = 131311423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131311457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 397749 + ... + 398078.

It is an arithmetic number, because the mean of its divisors is an integer number (14324904).

Almost surely, 2^131311455 is an apocalyptic number.

131311455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131311455 is a deficient number, since it is larger than the sum of its proper divisors (97887009).

131311455 is a wasteful number, since it uses less digits than its factorization.

131311455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795846.

The product of its digits is 900, while the sum is 24.

The square root of 131311455 is about 11459.1210395911. The cubic root of 131311455 is about 508.2774836667.

Adding to 131311455 its reverse (554113131), we get a palindrome (685424586).

The spelling of 131311455 in words is "one hundred thirty-one million, three hundred eleven thousand, four hundred fifty-five".