381313116 has 24 divisors (see below), whose sum is σ = 988589840. Its totient is φ = 127104336.

The previous prime is 381313099. The next prime is 381313117. The reversal of 381313116 is 611313183.

381313116 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

381313116 is strictly pandigital in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 381313116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381313117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1765231 + ... + 1765446.

Almost surely, 2^381313116 is an apocalyptic number.

381313116 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

381313116 is an abundant number, since it is smaller than the sum of its proper divisors (607276724).

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

381313116 is a wasteful number, since it uses less digits than its factorization.

381313116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530690 (or 3530682 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 381313116 is about 19527.2403580229. The cubic root of 381313116 is about 725.1489926052.

Adding to 381313116 its reverse (611313183), we get a palindrome (992626299).

The spelling of 381313116 in words is "three hundred eighty-one million, three hundred thirteen thousand, one hundred sixteen".