131042516 has 18 divisors (see below), whose sum is σ = 252068250. Its totient is φ = 59564560.

The previous prime is 131042491. The next prime is 131042521. The reversal of 131042516 is 615240131.

It can be written as a sum of positive squares in only one way, i.e., 89491600 + 41550916 = 9460^2 + 6446^2 .

It is a super-2 number, since 2×131042516² = 34344281999220512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131042491 and 131042500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 134891 + ... + 135858.

Almost surely, 2^131042516 is an apocalyptic number.

It is an amenable number.

131042516 is a deficient number, since it is larger than the sum of its proper divisors (121025734).

131042516 is a wasteful number, since it uses less digits than its factorization.

131042516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270775 (or 270762 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 131042516 is about 11447.3803116696. The cubic root of 131042516 is about 507.9302454495.

Adding to 131042516 its reverse (615240131), we get a palindrome (746282647).

The spelling of 131042516 in words is "one hundred thirty-one million, forty-two thousand, five hundred sixteen".