131774379 has 16 divisors (see below), whose sum is σ = 193829760. Its totient is φ = 78964160.

The previous prime is 131774359. The next prime is 131774393. The reversal of 131774379 is 973477131.

It is not a de Polignac number, because 131774379 - 2¹¹ = 131772331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131774379.

It is not an unprimeable number, because it can be changed into a prime (131774359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19497 + ... + 25370.

It is an arithmetic number, because the mean of its divisors is an integer number (12114360).

Almost surely, 2^131774379 is an apocalyptic number.

131774379 is a deficient number, since it is larger than the sum of its proper divisors (62055381).

131774379 is a wasteful number, since it uses less digits than its factorization.

131774379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44970.

The product of its digits is 111132, while the sum is 42.

The square root of 131774379 is about 11479.3022000468. The cubic root of 131774379 is about 508.8740751454.

The spelling of 131774379 in words is "one hundred thirty-one million, seven hundred seventy-four thousand, three hundred seventy-nine".