315381378 has 24 divisors (see below), whose sum is σ = 683017488. Its totient is φ = 97040112.

The previous prime is 315381371. The next prime is 315381413. The reversal of 315381378 is 873183513.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (315381371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154500 + ... + 156527.

It is an arithmetic number, because the mean of its divisors is an integer number (28459062).

Almost surely, 2^315381378 is an apocalyptic number.

315381378 is an abundant number, since it is smaller than the sum of its proper divisors (367636110).

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

315381378 is a wasteful number, since it uses less digits than its factorization.

315381378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311058 (or 311045 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 315381378 is about 17758.9802072078. The cubic root of 315381378 is about 680.6836967275.

The spelling of 315381378 in words is "three hundred fifteen million, three hundred eighty-one thousand, three hundred seventy-eight".