131615241213 has 4 divisors (see below), whose sum is σ = 175486988288. Its totient is φ = 87743494140.

The previous prime is 131615241211. The next prime is 131615241227. The reversal of 131615241213 is 312142516131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 131615241213 - 2¹ = 131615241211 is a prime.

It is a super-2 number, since 2×131615241213² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131615241211) 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, 21935873533 + ... + 21935873538.

It is an arithmetic number, because the mean of its divisors is an integer number (43871747072).

Almost surely, 2^131615241213 is an apocalyptic number.

It is an amenable number.

131615241213 is a deficient number, since it is larger than the sum of its proper divisors (43871747075).

131615241213 is an equidigital number, since it uses as much as digits as its factorization.

131615241213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43871747074.

The product of its digits is 4320, while the sum is 30.

Adding to 131615241213 its reverse (312142516131), we get a palindrome (443757757344).

The spelling of 131615241213 in words is "one hundred thirty-one billion, six hundred fifteen million, two hundred forty-one thousand, two hundred thirteen".