2045120431 has 4 divisors (see below), whose sum is σ = 2050378200. Its totient is φ = 2039862664.

The previous prime is 2045120411. The next prime is 2045120459. The reversal of 2045120431 is 1340215402.

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 2045120431 - 2⁹ = 2045119919 is a prime.

It is a super-2 number, since 2×2045120431² = 8365035154587251522, 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 (2045120411) 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, 2628301 + ... + 2629078.

It is an arithmetic number, because the mean of its divisors is an integer number (512594550).

Almost surely, 2^2045120431 is an apocalyptic number.

2045120431 is a deficient number, since it is larger than the sum of its proper divisors (5257769).

2045120431 is an equidigital number, since it uses as much as digits as its factorization.

2045120431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5257768.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2045120431 is about 45223.0077615366. The cubic root of 2045120431 is about 1269.3253760948.

Adding to 2045120431 its reverse (1340215402), we get a palindrome (3385335833).

The spelling of 2045120431 in words is "two billion, forty-five million, one hundred twenty thousand, four hundred thirty-one".