2045131131 has 4 divisors (see below), whose sum is σ = 2726841512. Its totient is φ = 1363420752.

The previous prime is 2045131129. The next prime is 2045131147. The reversal of 2045131131 is 1311315402.

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

It is not a de Polignac number, because 2045131131 - 2¹ = 2045131129 is a prime.

It is a super-2 number, since 2×2045131131² = 8365122685970678322, 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 = 2045131098 and 2045131107.

It is not an unprimeable number, because it can be changed into a prime (2045131031) 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, 340855186 + ... + 340855191.

It is an arithmetic number, because the mean of its divisors is an integer number (681710378).

Almost surely, 2^2045131131 is an apocalyptic number.

2045131131 is a deficient number, since it is larger than the sum of its proper divisors (681710381).

2045131131 is an equidigital number, since it uses as much as digits as its factorization.

2045131131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681710380.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2045131131 is about 45223.1260639952. The cubic root of 2045131131 is about 1269.3275897798.

Adding to 2045131131 its reverse (1311315402), we get a palindrome (3356446533).

The spelling of 2045131131 in words is "two billion, forty-five million, one hundred thirty-one thousand, one hundred thirty-one".