131056939 has 4 divisors (see below), whose sum is σ = 141138256. Its totient is φ = 120975624.

The previous prime is 131056909. The next prime is 131056943. The reversal of 131056939 is 939650131.

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

It is a cyclic number.

It is not a de Polignac number, because 131056939 - 2⁹ = 131056427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131056898 and 131056907.

It is not an unprimeable number, because it can be changed into a prime (131056909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5040639 + ... + 5040664.

It is an arithmetic number, because the mean of its divisors is an integer number (35284564).

Almost surely, 2^131056939 is an apocalyptic number.

131056939 is a deficient number, since it is larger than the sum of its proper divisors (10081317).

131056939 is a wasteful number, since it uses less digits than its factorization.

131056939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10081316.

The product of its (nonzero) digits is 21870, while the sum is 37.

The square root of 131056939 is about 11448.0102637969. The cubic root of 131056939 is about 507.9488796287.

The spelling of 131056939 in words is "one hundred thirty-one million, fifty-six thousand, nine hundred thirty-nine".