380531 has 4 divisors (see below), whose sum is σ = 384552. Its totient is φ = 376512.

The previous prime is 380503. The next prime is 380533. The reversal of 380531 is 135083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135083 = 13 ⋅10391.

It is a cyclic number.

It is not a de Polignac number, because 380531 - 2¹⁸ = 118387 is a prime.

It is a super-2 number, since 2×380531² = 289607683922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (380533) 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, 1865 + ... + 2058.

It is an arithmetic number, because the mean of its divisors is an integer number (96138).

2³⁸⁰⁵³¹ is an apocalyptic number.

380531 is a deficient number, since it is larger than the sum of its proper divisors (4021).

380531 is an equidigital number, since it uses as much as digits as its factorization.

380531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4020.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 380531 is about 616.8719478141. The cubic root of 380531 is about 72.4652865921.

The spelling of 380531 in words is "three hundred eighty thousand, five hundred thirty-one".