131115610 has 8 divisors (see below), whose sum is σ = 236008116. Its totient is φ = 52446240.

The previous prime is 131115563. The next prime is 131115613. The reversal of 131115610 is 16511131.

It can be written as a sum of positive squares in 2 ways, for example, as 120494529 + 10621081 = 10977^2 + 3259^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (131115613) 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, 6555771 + ... + 6555790.

Almost surely, 2^131115610 is an apocalyptic number.

131115610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131115610 is a deficient number, since it is larger than the sum of its proper divisors (104892506).

131115610 is a wasteful number, since it uses less digits than its factorization.

131115610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13111568.

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 131115610 is about 11450.5724747717. The cubic root of 131115610 is about 508.0246671015.

Adding to 131115610 its reverse (16511131), we get a palindrome (147626741).

It can be divided in two parts, 13111 and 5610, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 131115610 in words is "one hundred thirty-one million, one hundred fifteen thousand, six hundred ten".