381071100 has 36 divisors (see below), whose sum is σ = 1102566584. Its totient is φ = 101618880.

The previous prime is 381071077. The next prime is 381071101. The reversal of 381071100 is 1170183.

381071100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381071101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 634819 + ... + 635418.

Almost surely, 2^381071100 is an apocalyptic number.

381071100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

381071100 is an abundant number, since it is smaller than the sum of its proper divisors (721495484).

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

381071100 is a wasteful number, since it uses less digits than its factorization.

381071100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270254 (or 1270247 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 21.

The square root of 381071100 is about 19521.0424926539. The cubic root of 381071100 is about 724.9955449588.

The spelling of 381071100 in words is "three hundred eighty-one million, seventy-one thousand, one hundred".