431220502345 has 8 divisors (see below), whose sum is σ = 517582960776. Its totient is φ = 344897496576.

The previous prime is 431220502313. The next prime is 431220502379. The reversal of 431220502345 is 543205022134.

It can be written as a sum of positive squares in 4 ways, for example, as 148936561929 + 282283940416 = 385923^2 + 531304^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 431220502345 - 2⁵ = 431220502313 is a prime.

It is a super-2 number, since 2×431220502345² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9839112 + ... + 9882841.

It is an arithmetic number, because the mean of its divisors is an integer number (64697870097).

Almost surely, 2^431220502345 is an apocalyptic number.

It is an amenable number.

431220502345 is a deficient number, since it is larger than the sum of its proper divisors (86362458431).

431220502345 is a wasteful number, since it uses less digits than its factorization.

431220502345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19726331.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 431220502345 its reverse (543205022134), we get a palindrome (974425524479).

The spelling of 431220502345 in words is "four hundred thirty-one billion, two hundred twenty million, five hundred two thousand, three hundred forty-five".