381101504 has 28 divisors (see below), whose sum is σ = 864284784. Its totient is φ = 163329024.

The previous prime is 381101503. The next prime is 381101509. The reversal of 381101504 is 405101183.

It is a tau number, because it is divible by the number of its divisors (28).

It is a self number, because there is not a number n which added to its sum of digits gives 381101504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381101503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424889 + ... + 425784.

Almost surely, 2^381101504 is an apocalyptic number.

It is an amenable number.

381101504 is an abundant number, since it is smaller than the sum of its proper divisors (483183280).

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

381101504 is an equidigital number, since it uses as much as digits as its factorization.

381101504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850692 (or 850682 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 381101504 is about 19521.8212265147. The cubic root of 381101504 is about 725.0148258562.

Adding to 381101504 its reverse (405101183), we get a palindrome (786202687).

The spelling of 381101504 in words is "three hundred eighty-one million, one hundred one thousand, five hundred four".