131312378 has 8 divisors (see below), whose sum is σ = 199462080. Its totient is φ = 64825020.

The previous prime is 131312353. The next prime is 131312399. The reversal of 131312378 is 873213131.

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

It is a self number, because there is not a number n which added to its sum of digits gives 131312378.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415388 + ... + 415703.

It is an arithmetic number, because the mean of its divisors is an integer number (24932760).

Almost surely, 2^131312378 is an apocalyptic number.

131312378 is a deficient number, since it is larger than the sum of its proper divisors (68149702).

131312378 is an equidigital number, since it uses as much as digits as its factorization.

131312378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831172.

The product of its digits is 3024, while the sum is 29.

The square root of 131312378 is about 11459.1613131154. The cubic root of 131312378 is about 508.2786745733.

The spelling of 131312378 in words is "one hundred thirty-one million, three hundred twelve thousand, three hundred seventy-eight".