131322378 has 32 divisors (see below), whose sum is σ = 288130752. Its totient is φ = 39571200.

The previous prime is 131322349. The next prime is 131322379. The reversal of 131322378 is 873223131.

It is not an unprimeable number, because it can be changed into a prime (131322379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6450 + ... + 17442.

It is an arithmetic number, because the mean of its divisors is an integer number (9004086).

Almost surely, 2^131322378 is an apocalyptic number.

131322378 is an abundant number, since it is smaller than the sum of its proper divisors (156808374).

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

131322378 is a wasteful number, since it uses less digits than its factorization.

131322378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11190.

The product of its digits is 6048, while the sum is 30.

The square root of 131322378 is about 11459.5976369155. The cubic root of 131322378 is about 508.2915767785.

The spelling of 131322378 in words is "one hundred thirty-one million, three hundred twenty-two thousand, three hundred seventy-eight".