131503023 has 24 divisors (see below), whose sum is σ = 202849920. Its totient is φ = 81910080.

The previous prime is 131502991. The next prime is 131503027. The reversal of 131503023 is 320305131.

It is not a de Polignac number, because 131503023 - 2⁵ = 131502991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131502987 and 131503005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131503027) 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, 36 + ... + 16217.

It is an arithmetic number, because the mean of its divisors is an integer number (8452080).

Almost surely, 2^131503023 is an apocalyptic number.

131503023 is a deficient number, since it is larger than the sum of its proper divisors (71346897).

131503023 is a wasteful number, since it uses less digits than its factorization.

131503023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16319 (or 16316 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 131503023 is about 11467.4767494859. The cubic root of 131503023 is about 508.5245359619.

Adding to 131503023 its reverse (320305131), we get a palindrome (451808154).

The spelling of 131503023 in words is "one hundred thirty-one million, five hundred three thousand, twenty-three".