131363978 has 8 divisors (see below), whose sum is σ = 197098272. Its totient is φ = 65664556.

The previous prime is 131363977. The next prime is 131363989. The reversal of 131363978 is 879363131.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131363977) 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, 5051 + ... + 16977.

It is an arithmetic number, because the mean of its divisors is an integer number (24637284).

Almost surely, 2^131363978 is an apocalyptic number.

131363978 is a deficient number, since it is larger than the sum of its proper divisors (65734294).

131363978 is a wasteful number, since it uses less digits than its factorization.

131363978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17436.

The product of its digits is 81648, while the sum is 41.

The square root of 131363978 is about 11461.4125656483. The cubic root of 131363978 is about 508.3452429232.

The spelling of 131363978 in words is "one hundred thirty-one million, three hundred sixty-three thousand, nine hundred seventy-eight".