131023103 has 2 divisors, whose sum is σ = 131023104. Its totient is φ = 131023102.

The previous prime is 131023091. The next prime is 131023117. The reversal of 131023103 is 301320131.

It is an a-pointer prime, because the next prime (131023117) can be obtained adding 131023103 to its sum of digits (14).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131023103 - 2²⁰ = 129974527 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131023163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65511551 + 65511552.

It is an arithmetic number, because the mean of its divisors is an integer number (65511552).

Almost surely, 2^131023103 is an apocalyptic number.

131023103 is a deficient number, since it is larger than the sum of its proper divisors (1).

131023103 is an equidigital number, since it uses as much as digits as its factorization.

131023103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 131023103 is about 11446.5323570066. The cubic root of 131023103 is about 507.9051621480.

Adding to 131023103 its reverse (301320131), we get a palindrome (432343234).

The spelling of 131023103 in words is "one hundred thirty-one million, twenty-three thousand, one hundred three".