2801381 has 8 divisors (see below), whose sum is σ = 3139104. Its totient is φ = 2477520.

The previous prime is 2801369. The next prime is 2801401. The reversal of 2801381 is 1831082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2801381 - 2⁶ = 2801317 is a prime.

It is a super-2 number, since 2×2801381² = 15695471014322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2801681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3035 + ... + 3848.

It is an arithmetic number, because the mean of its divisors is an integer number (392388).

2^2801381 is an apocalyptic number.

It is an amenable number.

2801381 is a deficient number, since it is larger than the sum of its proper divisors (337723).

2801381 is a wasteful number, since it uses less digits than its factorization.

2801381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6931.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 2801381 is about 1673.7326548765. The cubic root of 2801381 is about 140.9691430221.

Subtracting from 2801381 its reverse (1831082), we obtain a cube (970299 = 99³).

It can be divided in two parts, 280 and 1381, that added together give a palindrome (1661).

The spelling of 2801381 in words is "two million, eight hundred one thousand, three hundred eighty-one".