131110403 has 4 divisors (see below), whose sum is σ = 131185560. Its totient is φ = 131035248.

The previous prime is 131110391. The next prime is 131110429. The reversal of 131110403 is 304011131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304011131 = 4273 ⋅71147.

It is a cyclic number.

It is not a de Polignac number, because 131110403 - 2⁴ = 131110387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131110453) 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, 34898 + ... + 38471.

It is an arithmetic number, because the mean of its divisors is an integer number (32796390).

Almost surely, 2^131110403 is an apocalyptic number.

131110403 is a deficient number, since it is larger than the sum of its proper divisors (75157).

131110403 is an equidigital number, since it uses as much as digits as its factorization.

131110403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75156.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 131110403 is about 11450.3451039696. The cubic root of 131110403 is about 508.0179419439.

Adding to 131110403 its reverse (304011131), we get a palindrome (435121534).

The spelling of 131110403 in words is "one hundred thirty-one million, one hundred ten thousand, four hundred three".