131673777 has 8 divisors (see below), whose sum is σ = 176017920. Its totient is φ = 87556080.

The previous prime is 131673769. The next prime is 131673793. The reversal of 131673777 is 777376131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131673777 - 2³ = 131673769 is a prime.

It is a super-3 number, since 3×131673777³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (131673767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55249 + ... + 57582.

It is an arithmetic number, because the mean of its divisors is an integer number (22002240).

Almost surely, 2^131673777 is an apocalyptic number.

It is an amenable number.

131673777 is a deficient number, since it is larger than the sum of its proper divisors (44344143).

131673777 is a wasteful number, since it uses less digits than its factorization.

131673777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113223.

The product of its digits is 129654, while the sum is 42.

The square root of 131673777 is about 11474.9194768417. The cubic root of 131673777 is about 508.7445436856.

The spelling of 131673777 in words is "one hundred thirty-one million, six hundred seventy-three thousand, seven hundred seventy-seven".