131354165 has 4 divisors (see below), whose sum is σ = 157625004. Its totient is φ = 105083328.

The previous prime is 131354147. The next prime is 131354183. The reversal of 131354165 is 561453131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 561453131 = 181 ⋅3101951.

It is an interprime number because it is at equal distance from previous prime (131354147) and next prime (131354183).

It can be written as a sum of positive squares in 2 ways, for example, as 53597041 + 77757124 = 7321^2 + 8818^2 .

It is a cyclic number.

It is not a de Polignac number, because 131354165 - 2⁸ = 131353909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13135412 + ... + 13135421.

It is an arithmetic number, because the mean of its divisors is an integer number (39406251).

Almost surely, 2^131354165 is an apocalyptic number.

It is an amenable number.

131354165 is a deficient number, since it is larger than the sum of its proper divisors (26270839).

131354165 is an equidigital number, since it uses as much as digits as its factorization.

131354165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26270838.

The product of its digits is 5400, while the sum is 29.

The square root of 131354165 is about 11460.9844690585. The cubic root of 131354165 is about 508.3325846685.

The spelling of 131354165 in words is "one hundred thirty-one million, three hundred fifty-four thousand, one hundred sixty-five".