131503073 has 16 divisors (see below), whose sum is σ = 145533696. Its totient is φ = 118056960.

The previous prime is 131503063. The next prime is 131503091. The reversal of 131503073 is 370305131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 131503073 - 2⁸ = 131502817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131503033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204833 + ... + 205473.

It is an arithmetic number, because the mean of its divisors is an integer number (9095856).

Almost surely, 2^131503073 is an apocalyptic number.

131503073 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

131503073 is a deficient number, since it is larger than the sum of its proper divisors (14030623).

131503073 is a wasteful number, since it uses less digits than its factorization.

131503073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064.

The product of its (nonzero) digits is 945, while the sum is 23.

The square root of 131503073 is about 11467.4789295642. The cubic root of 131503073 is about 508.5246004122.

The spelling of 131503073 in words is "one hundred thirty-one million, five hundred three thousand, seventy-three".