2040402131 has 4 divisors (see below), whose sum is σ = 2045872752. Its totient is φ = 2034931512.

The previous prime is 2040402107. The next prime is 2040402149. The reversal of 2040402131 is 1312040402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2040402131 is a prime.

It is a super-2 number, since 2×2040402131² = 8326481712378682322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2040402731) 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, 2734751 + ... + 2735496.

It is an arithmetic number, because the mean of its divisors is an integer number (511468188).

Almost surely, 2^2040402131 is an apocalyptic number.

2040402131 is a deficient number, since it is larger than the sum of its proper divisors (5470621).

2040402131 is an equidigital number, since it uses as much as digits as its factorization.

2040402131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5470620.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2040402131 is about 45170.8106081793. The cubic root of 2040402131 is about 1268.3484703616.

Adding to 2040402131 its reverse (1312040402), we get a palindrome (3352442533).

The spelling of 2040402131 in words is "two billion, forty million, four hundred two thousand, one hundred thirty-one".