378497331 has 24 divisors (see below), whose sum is σ = 562302000. Its totient is φ = 245236992.

The previous prime is 378497311. The next prime is 378497341. The reversal of 378497331 is 133794873.

It is not a de Polignac number, because 378497331 - 2⁶ = 378497267 is a prime.

It is a super-2 number, since 2×378497331² = 286520459148247122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (378497311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43255 + ... + 51263.

It is an arithmetic number, because the mean of its divisors is an integer number (23429250).

Almost surely, 2^378497331 is an apocalyptic number.

378497331 is a deficient number, since it is larger than the sum of its proper divisors (183804669).

378497331 is a wasteful number, since it uses less digits than its factorization.

378497331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8163 (or 8160 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 378497331 is about 19455.0078643006. The cubic root of 378497331 is about 723.3596404079.

The spelling of 378497331 in words is "three hundred seventy-eight million, four hundred ninety-seven thousand, three hundred thirty-one".