381203101 has 4 divisors (see below), whose sum is σ = 382355104. Its totient is φ = 380051100.

The previous prime is 381203089. The next prime is 381203131. The reversal of 381203101 is 101302183.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101302183 = 2777 ⋅36479.

It is a cyclic number.

It is not a de Polignac number, because 381203101 - 2⁹ = 381202589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381203131) 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, 575505 + ... + 576166.

It is an arithmetic number, because the mean of its divisors is an integer number (95588776).

Almost surely, 2^381203101 is an apocalyptic number.

It is an amenable number.

381203101 is a deficient number, since it is larger than the sum of its proper divisors (1152003).

381203101 is a wasteful number, since it uses less digits than its factorization.

381203101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152002.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 381203101 is about 19524.4231925043. The cubic root of 381203101 is about 725.0792468270.

Adding to 381203101 its reverse (101302183), we get a palindrome (482505284).

The spelling of 381203101 in words is "three hundred eighty-one million, two hundred three thousand, one hundred one".