2045143213 has 4 divisors (see below), whose sum is σ = 2045662720. Its totient is φ = 2044623708.

The previous prime is 2045143211. The next prime is 2045143237. The reversal of 2045143213 is 3123415402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3123415402 = 2 ⋅1561707701.

It is a cyclic number.

It is not a de Polignac number, because 2045143213 - 2¹ = 2045143211 is a prime.

It is a super-2 number, since 2×2045143213² = 8365221523359926738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045143211) 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, 253803 + ... + 261736.

It is an arithmetic number, because the mean of its divisors is an integer number (511415680).

Almost surely, 2^2045143213 is an apocalyptic number.

It is an amenable number.

2045143213 is a deficient number, since it is larger than the sum of its proper divisors (519507).

2045143213 is an equidigital number, since it uses as much as digits as its factorization.

2045143213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519506.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 2045143213 is about 45223.2596458946. The cubic root of 2045143213 is about 1269.3300893727.

Adding to 2045143213 its reverse (3123415402), we get a palindrome (5168558615).

The spelling of 2045143213 in words is "two billion, forty-five million, one hundred forty-three thousand, two hundred thirteen".