131515521003 has 12 divisors (see below), whose sum is σ = 190009870960. Its totient is φ = 87657164496.

The previous prime is 131515520977. The next prime is 131515521029. The reversal of 131515521003 is 300125515131.

131515521003 is a `hidden beast` number, since 1 + 3 + 1 + 5 + 1 + 552 + 100 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (131515520977) and next prime (131515521029).

It is not a de Polignac number, because 131515521003 - 2¹⁰ = 131515519979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131515521503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1612108 + ... + 1691721.

Almost surely, 2^131515521003 is an apocalyptic number.

131515521003 is a deficient number, since it is larger than the sum of its proper divisors (58494349957).

131515521003 is a wasteful number, since it uses less digits than its factorization.

131515521003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3308258 (or 3308255 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The spelling of 131515521003 in words is "one hundred thirty-one billion, five hundred fifteen million, five hundred twenty-one thousand, three".