378283731 has 32 divisors (see below), whose sum is σ = 601804800. Its totient is φ = 206807040.

The previous prime is 378283729. The next prime is 378283747. The reversal of 378283731 is 137382873.

It is not a de Polignac number, because 378283731 - 2¹ = 378283729 is a prime.

It is a super-2 number, since 2×378283731² = 286197162278560722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (378283721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54675 + ... + 61203.

It is an arithmetic number, because the mean of its divisors is an integer number (18806400).

Almost surely, 2^378283731 is an apocalyptic number.

378283731 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

378283731 is a deficient number, since it is larger than the sum of its proper divisors (223521069).

378283731 is a wasteful number, since it uses less digits than its factorization.

378283731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6659.

The product of its digits is 169344, while the sum is 42.

The square root of 378283731 is about 19449.5175004420. The cubic root of 378283731 is about 723.2235419639.

The spelling of 378283731 in words is "three hundred seventy-eight million, two hundred eighty-three thousand, seven hundred thirty-one".