2045310431 has 4 divisors (see below), whose sum is σ = 2050311600. Its totient is φ = 2040309264.

The previous prime is 2045310389. The next prime is 2045310469. The reversal of 2045310431 is 1340135402.

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 2045310431 - 2¹⁴ = 2045294047 is a prime.

It is a super-5 number, since 5×2045310431⁵ (a number of 48 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2045310397 and 2045310406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045310481) 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, 2499971 + ... + 2500788.

It is an arithmetic number, because the mean of its divisors is an integer number (512577900).

Almost surely, 2^2045310431 is an apocalyptic number.

2045310431 is a deficient number, since it is larger than the sum of its proper divisors (5001169).

2045310431 is an equidigital number, since it uses as much as digits as its factorization.

2045310431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5001168.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 2045310431 is about 45225.1084133582. The cubic root of 2045310431 is about 1269.3646833730.

Adding to 2045310431 its reverse (1340135402), we get a palindrome (3385445833).

The spelling of 2045310431 in words is "two billion, forty-five million, three hundred ten thousand, four hundred thirty-one".