131779241 has 4 divisors (see below), whose sum is σ = 143759184. Its totient is φ = 119799300.

The previous prime is 131779217. The next prime is 131779243. The reversal of 131779241 is 142977131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131779241 - 2⁶ = 131779177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131779243) 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, 5989955 + ... + 5989976.

It is an arithmetic number, because the mean of its divisors is an integer number (35939796).

Almost surely, 2^131779241 is an apocalyptic number.

131779241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131779241 is a deficient number, since it is larger than the sum of its proper divisors (11979943).

131779241 is a wasteful number, since it uses less digits than its factorization.

131779241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11979942.

The product of its digits is 10584, while the sum is 35.

The square root of 131779241 is about 11479.5139705477. The cubic root of 131779241 is about 508.8803336087.

The spelling of 131779241 in words is "one hundred thirty-one million, seven hundred seventy-nine thousand, two hundred forty-one".