2231001 has 6 divisors (see below), whose sum is σ = 3222570. Its totient is φ = 1487328.

The previous prime is 2230979. The next prime is 2231011. The reversal of 2231001 is 1001322.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1742400 + 488601 = 1320^2 + 699^2 .

It is not a de Polignac number, because 2231001 - 2⁷ = 2230873 is a prime.

It is a super-3 number, since 3×2231001³ = 33313521969269079003, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 247889 = 2231001 / (2 + 2 + 3 + 1 + 0 + 0 + 1).

It is not an unprimeable number, because it can be changed into a prime (2231011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123936 + ... + 123953.

It is an arithmetic number, because the mean of its divisors is an integer number (537095).

2^2231001 is an apocalyptic number.

It is an amenable number.

2231001 is a deficient number, since it is larger than the sum of its proper divisors (991569).

2231001 is a wasteful number, since it uses less digits than its factorization.

2231001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247895 (or 247892 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 2231001 is about 1493.6535742936. The cubic root of 2231001 is about 130.6672010194.

Adding to 2231001 its reverse (1001322), we get a palindrome (3232323).

The spelling of 2231001 in words is "two million, two hundred thirty-one thousand, one".