2045343231 has 20 divisors (see below), whose sum is σ = 3058956472. Its totient is φ = 1361970288.

The previous prime is 2045343229. The next prime is 2045343269. The reversal of 2045343231 is 1323435402.

It is not a de Polignac number, because 2045343231 - 2¹ = 2045343229 is a prime.

It is a super-2 number, since 2×2045343231² = 8366857865195038722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2045343195 and 2045343204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045348231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 57225 + ... + 85821.

Almost surely, 2^2045343231 is an apocalyptic number.

2045343231 is a deficient number, since it is larger than the sum of its proper divisors (1013613241).

2045343231 is an equidigital number, since it uses as much as digits as its factorization.

2045343231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29492 (or 29483 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 2045343231 is about 45225.4710423230. The cubic root of 2045343231 is about 1269.3714688041.

Adding to 2045343231 its reverse (1323435402), we get a palindrome (3368778633).

It can be divided in two parts, 204 and 5343231, that added together give a palindrome (5343435).

The spelling of 2045343231 in words is "two billion, forty-five million, three hundred forty-three thousand, two hundred thirty-one".