131503066 has 16 divisors (see below), whose sum is σ = 208807200. Its totient is φ = 61939728.

The previous prime is 131503063. The next prime is 131503091. The reversal of 131503066 is 660305131.

It is a self number, because there is not a number n which added to its sum of digits gives 131503066.

It is not an unprimeable number, because it can be changed into a prime (131503063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2865 + ... + 16468.

It is an arithmetic number, because the mean of its divisors is an integer number (13050450).

Almost surely, 2^131503066 is an apocalyptic number.

131503066 is a deficient number, since it is larger than the sum of its proper divisors (77304134).

131503066 is a wasteful number, since it uses less digits than its factorization.

131503066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19533.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 131503066 is about 11467.4786243533. The cubic root of 131503066 is about 508.5245913891.

Adding to 131503066 its reverse (660305131), we get a palindrome (791808197).

The spelling of 131503066 in words is "one hundred thirty-one million, five hundred three thousand, sixty-six".