131504101 has 4 divisors (see below), whose sum is σ = 131562252. Its totient is φ = 131445952.

The previous prime is 131504099. The next prime is 131504159. The reversal of 131504101 is 101405131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15920100 + 115584001 = 3990^2 + 10751^2 .

It is a cyclic number.

It is not a de Polignac number, because 131504101 - 2¹ = 131504099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131304101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25540 + ... + 30253.

It is an arithmetic number, because the mean of its divisors is an integer number (32890563).

Almost surely, 2^131504101 is an apocalyptic number.

It is an amenable number.

131504101 is a deficient number, since it is larger than the sum of its proper divisors (58151).

131504101 is an equidigital number, since it uses as much as digits as its factorization.

131504101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58150.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 131504101 is about 11467.5237518830. The cubic root of 131504101 is about 508.5259255065.

Adding to 131504101 its reverse (101405131), we get a palindrome (232909232).

The spelling of 131504101 in words is "one hundred thirty-one million, five hundred four thousand, one hundred one".