381277403 has 4 divisors (see below), whose sum is σ = 410606448. Its totient is φ = 351948360.

The previous prime is 381277399. The next prime is 381277423. The reversal of 381277403 is 304772183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304772183 = 1499 ⋅203317.

It is a cyclic number.

It is not a de Polignac number, because 381277403 - 2² = 381277399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381277423) 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, 14664503 + ... + 14664528.

It is an arithmetic number, because the mean of its divisors is an integer number (102651612).

Almost surely, 2^381277403 is an apocalyptic number.

381277403 is a deficient number, since it is larger than the sum of its proper divisors (29329045).

381277403 is a wasteful number, since it uses less digits than its factorization.

381277403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29329044.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 381277403 is about 19526.3258960819. The cubic root of 381277403 is about 725.1263532454.

The spelling of 381277403 in words is "three hundred eighty-one million, two hundred seventy-seven thousand, four hundred three".