2044400131 has 4 divisors (see below), whose sum is σ = 2046998632. Its totient is φ = 2041801632.

The previous prime is 2044400123. The next prime is 2044400143. The reversal of 2044400131 is 1310044402.

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

It is a cyclic number.

It is not a de Polignac number, because 2044400131 - 2³ = 2044400123 is a prime.

It is a super-2 number, since 2×2044400131² = 8359143791265634322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2044400099 and 2044400108.

It is not an unprimeable number, because it can be changed into a prime (2044400231) 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, 1298070 + ... + 1299643.

It is an arithmetic number, because the mean of its divisors is an integer number (511749658).

Almost surely, 2^2044400131 is an apocalyptic number.

2044400131 is a deficient number, since it is larger than the sum of its proper divisors (2598501).

2044400131 is an equidigital number, since it uses as much as digits as its factorization.

2044400131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2598500.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2044400131 is about 45215.0431936098. The cubic root of 2044400131 is about 1269.1763380210.

Adding to 2044400131 its reverse (1310044402), we get a palindrome (3354444533).

The spelling of 2044400131 in words is "two billion, forty-four million, four hundred thousand, one hundred thirty-one".