381012263 has 4 divisors (see below), whose sum is σ = 401065560. Its totient is φ = 360958968.

The previous prime is 381012253. The next prime is 381012271. The reversal of 381012263 is 362210183.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 381012263 - 2²⁶ = 313903399 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 (381012223) 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, 10026620 + ... + 10026657.

It is an arithmetic number, because the mean of its divisors is an integer number (100266390).

Almost surely, 2^381012263 is an apocalyptic number.

381012263 is a deficient number, since it is larger than the sum of its proper divisors (20053297).

381012263 is a wasteful number, since it uses less digits than its factorization.

381012263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20053296.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 381012263 is about 19519.5354196764. The cubic root of 381012263 is about 724.9582301738.

The spelling of 381012263 in words is "three hundred eighty-one million, twelve thousand, two hundred sixty-three".