131103243 has 24 divisors (see below), whose sum is σ = 199200768. Its totient is φ = 82927152.

The previous prime is 131103239. The next prime is 131103283. The reversal of 131103243 is 342301131.

It is not a de Polignac number, because 131103243 - 2² = 131103239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131103283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23796 + ... + 28782.

It is an arithmetic number, because the mean of its divisors is an integer number (8300032).

Almost surely, 2^131103243 is an apocalyptic number.

131103243 is a deficient number, since it is larger than the sum of its proper divisors (68097525).

131103243 is a wasteful number, since it uses less digits than its factorization.

131103243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5143 (or 5140 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 131103243 is about 11450.0324453689. The cubic root of 131103243 is about 508.0086940769.

Adding to 131103243 its reverse (342301131), we get a palindrome (473404374).

The spelling of 131103243 in words is "one hundred thirty-one million, one hundred three thousand, two hundred forty-three".