5431221345 has 32 divisors (see below), whose sum is σ = 9978900480. Its totient is φ = 2494722240.

The previous prime is 5431221337. The next prime is 5431221373.

5431221345 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 5431221345 - 2³ = 5431221337 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 863089 + ... + 869358.

It is an arithmetic number, because the mean of its divisors is an integer number (311840640).

Almost surely, 2^5431221345 is an apocalyptic number.

5431221345 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5431221345 is a deficient number, since it is larger than the sum of its proper divisors (4547679135).

5431221345 is a wasteful number, since it uses less digits than its factorization.

5431221345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732485.

The product of its digits is 14400, while the sum is 30.

The square root of 5431221345 is about 73696.8204538025. The cubic root of 5431221345 is about 1757.7853239682.

It can be divided in two parts, 54312 and 21345, that added together give a palindrome (75657).

The spelling of 5431221345 in words is "five billion, four hundred thirty-one million, two hundred twenty-one thousand, three hundred forty-five".