2031401 has 4 divisors (see below), whose sum is σ = 2049492. Its totient is φ = 2013312.

The previous prime is 2031397. The next prime is 2031409. The reversal of 2031401 is 1041302.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 403225 + 1628176 = 635^2 + 1276^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031401 - 2² = 2031397 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 (2031409) 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, 8876 + ... + 9101.

It is an arithmetic number, because the mean of its divisors is an integer number (512373).

2^2031401 is an apocalyptic number.

It is an amenable number.

2031401 is a deficient number, since it is larger than the sum of its proper divisors (18091).

2031401 is a wasteful number, since it uses less digits than its factorization.

2031401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18090.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2031401 is about 1425.2722546938. The cubic root of 2031401 is about 126.6480635961.

Adding to 2031401 its reverse (1041302), we get a palindrome (3072703).

Subtracting from 2031401 its reverse (1041302), we obtain a palindrome (990099).

The spelling of 2031401 in words is "two million, thirty-one thousand, four hundred one".