131247155 has 16 divisors (see below), whose sum is σ = 178540320. Its totient is φ = 91819008.

The previous prime is 131247119. The next prime is 131247187. The reversal of 131247155 is 551742131.

It is a cyclic number.

It is not a de Polignac number, because 131247155 - 2⁶ = 131247091 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51902 + ... + 54371.

It is an arithmetic number, because the mean of its divisors is an integer number (11158770).

Almost surely, 2^131247155 is an apocalyptic number.

131247155 is a deficient number, since it is larger than the sum of its proper divisors (47293165).

131247155 is a wasteful number, since it uses less digits than its factorization.

131247155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106310.

The product of its digits is 4200, while the sum is 29.

The square root of 131247155 is about 11456.3150707372. The cubic root of 131247155 is about 508.1945064474.

Adding to 131247155 its reverse (551742131), we get a palindrome (682989286).

The spelling of 131247155 in words is "one hundred thirty-one million, two hundred forty-seven thousand, one hundred fifty-five".