131645119 has 4 divisors (see below), whose sum is σ = 131700744. Its totient is φ = 131589496.

The previous prime is 131645099. The next prime is 131645131. The reversal of 131645119 is 911546131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 911546131 = 16421 ⋅55511.

It is a cyclic number.

It is not a de Polignac number, because 131645119 - 2¹³ = 131636927 is a prime.

It is a super-2 number, since 2×131645119² = 34660874713048322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131645159) 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, 24097 + ... + 29050.

It is an arithmetic number, because the mean of its divisors is an integer number (32925186).

Almost surely, 2^131645119 is an apocalyptic number.

131645119 is a deficient number, since it is larger than the sum of its proper divisors (55625).

131645119 is an equidigital number, since it uses as much as digits as its factorization.

131645119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55624.

The product of its digits is 3240, while the sum is 31.

The square root of 131645119 is about 11473.6706855304. The cubic root of 131645119 is about 508.7076326182.

The spelling of 131645119 in words is "one hundred thirty-one million, six hundred forty-five thousand, one hundred nineteen".