381237 has 4 divisors (see below), whose sum is σ = 508320. Its totient is φ = 254156.

The previous prime is 381233. The next prime is 381239. The reversal of 381237 is 732183.

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.

It is a cyclic number.

It is not a de Polignac number, because 381237 - 2² = 381233 is a prime.

It is a D-number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 381237.

It is not an unprimeable number, because it can be changed into a prime (381233) 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, 63537 + ... + 63542.

It is an arithmetic number, because the mean of its divisors is an integer number (127080).

2³⁸¹²³⁷ is an apocalyptic number.

It is an amenable number.

381237 is a deficient number, since it is larger than the sum of its proper divisors (127083).

381237 is a wasteful number, since it uses less digits than its factorization.

381237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127082.

The product of its digits is 1008, while the sum is 24.

The square root of 381237 is about 617.4439245794. The cubic root of 381237 is about 72.5100739073.

It can be divided in two parts, 38 and 1237, that added together give a triangular number (1275 = T₅₀).

The spelling of 381237 in words is "three hundred eighty-one thousand, two hundred thirty-seven".