131602049 has 4 divisors (see below), whose sum is σ = 139343364. Its totient is φ = 123860736.

The previous prime is 131602043. The next prime is 131602069. The reversal of 131602049 is 940206131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 940206131 = 17 ⋅55306243.

It can be written as a sum of positive squares in 2 ways, for example, as 99600400 + 32001649 = 9980^2 + 5657^2 .

It is a cyclic number.

It is not a de Polignac number, because 131602049 - 2⁴ = 131602033 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131602043) 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, 3870632 + ... + 3870665.

It is an arithmetic number, because the mean of its divisors is an integer number (34835841).

Almost surely, 2^131602049 is an apocalyptic number.

It is an amenable number.

131602049 is a deficient number, since it is larger than the sum of its proper divisors (7741315).

131602049 is an equidigital number, since it uses as much as digits as its factorization.

131602049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7741314.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 131602049 is about 11471.7936261075. The cubic root of 131602049 is about 508.6521490379.

The spelling of 131602049 in words is "one hundred thirty-one million, six hundred two thousand, forty-nine".