2131401 has 16 divisors (see below), whose sum is σ = 3045440. Its totient is φ = 1321920.

The previous prime is 2131399. The next prime is 2131417. The reversal of 2131401 is 1041312.

It is a happy number.

It is not a de Polignac number, because 2131401 - 2¹ = 2131399 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2131601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3171 + ... + 3783.

It is an arithmetic number, because the mean of its divisors is an integer number (190340).

2^2131401 is an apocalyptic number.

It is an amenable number.

2131401 is a deficient number, since it is larger than the sum of its proper divisors (914039).

2131401 is a wasteful number, since it uses less digits than its factorization.

2131401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2131401 is about 1459.9318477244. The cubic root of 2131401 is about 128.6930385538.

Adding to 2131401 its reverse (1041312), we get a palindrome (3172713).

The spelling of 2131401 in words is "two million, one hundred thirty-one thousand, four hundred one".