378131 has 16 divisors (see below), whose sum is σ = 453600. Its totient is φ = 311808.

The previous prime is 378127. The next prime is 378137. The reversal of 378131 is 131873.

It is a happy number.

It is not a de Polignac number, because 378131 - 2² = 378127 is a prime.

It is a super-2 number, since 2×378131² = 285966106322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 378097 and 378106.

It is not an unprimeable number, because it can be changed into a prime (378137) 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, 6380 + ... + 6438.

It is an arithmetic number, because the mean of its divisors is an integer number (28350).

2³⁷⁸¹³¹ is an apocalyptic number.

378131 is a deficient number, since it is larger than the sum of its proper divisors (75469).

378131 is a wasteful number, since it uses less digits than its factorization.

378131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118.

The product of its digits is 504, while the sum is 23.

The square root of 378131 is about 614.9235724869. The cubic root of 378131 is about 72.3126195700.

The spelling of 378131 in words is "three hundred seventy-eight thousand, one hundred thirty-one".