131103215 has 4 divisors (see below), whose sum is σ = 157323864. Its totient is φ = 104882568.

The previous prime is 131103149. The next prime is 131103239. The reversal of 131103215 is 512301131.

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

It is a cyclic number.

It is not a de Polignac number, because 131103215 - 2¹² = 131099119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131103193 and 131103202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13110317 + ... + 13110326.

It is an arithmetic number, because the mean of its divisors is an integer number (39330966).

Almost surely, 2^131103215 is an apocalyptic number.

131103215 is a deficient number, since it is larger than the sum of its proper divisors (26220649).

131103215 is an equidigital number, since it uses as much as digits as its factorization.

131103215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26220648.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 131103215 is about 11450.0312226649. The cubic root of 131103215 is about 508.0086579114.

Adding to 131103215 its reverse (512301131), we get a palindrome (643404346).

The spelling of 131103215 in words is "one hundred thirty-one million, one hundred three thousand, two hundred fifteen".