131169078 has 16 divisors (see below), whose sum is σ = 291486960. Its totient is φ = 43723008.

The previous prime is 131169043. The next prime is 131169079. The reversal of 131169078 is 870961131.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131169079) 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 7 ways as a sum of consecutive naturals, for example, 1214475 + ... + 1214582.

It is an arithmetic number, because the mean of its divisors is an integer number (18217935).

Almost surely, 2^131169078 is an apocalyptic number.

131169078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

131169078 is an abundant number, since it is smaller than the sum of its proper divisors (160317882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131169078 is a wasteful number, since it uses less digits than its factorization.

131169078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429068 (or 2429062 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 131169078 is about 11452.9069672289. The cubic root of 131169078 is about 508.0937139817.

The spelling of 131169078 in words is "one hundred thirty-one million, one hundred sixty-nine thousand, seventy-eight".