131656503 has 16 divisors (see below), whose sum is σ = 191923200. Its totient is φ = 79615680.

The previous prime is 131656501. The next prime is 131656519. The reversal of 131656503 is 305656131.

It is not a de Polignac number, because 131656503 - 2¹ = 131656501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131656501) 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, 11643 + ... + 19971.

It is an arithmetic number, because the mean of its divisors is an integer number (11995200).

Almost surely, 2^131656503 is an apocalyptic number.

131656503 is a deficient number, since it is larger than the sum of its proper divisors (60266697).

131656503 is a wasteful number, since it uses less digits than its factorization.

131656503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8822.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 131656503 is about 11474.1667671339. The cubic root of 131656503 is about 508.7222956780.

The spelling of 131656503 in words is "one hundred thirty-one million, six hundred fifty-six thousand, five hundred three".