431541320503 has 16 divisors (see below), whose sum is σ = 458453166624. Its totient is φ = 404799943680.

The previous prime is 431541320479. The next prime is 431541320527. The reversal of 431541320503 is 305023145134.

It is an interprime number because it is at equal distance from previous prime (431541320479) and next prime (431541320527).

It is a cyclic number.

It is not a de Polignac number, because 431541320503 - 2⁹ = 431541319991 is a prime.

It is a super-2 number, since 2×431541320503² (a number of 24 digits) 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 (431541320533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20680051 + ... + 20700907.

It is an arithmetic number, because the mean of its divisors is an integer number (28653322914).

Almost surely, 2^431541320503 is an apocalyptic number.

431541320503 is a deficient number, since it is larger than the sum of its proper divisors (26911846121).

431541320503 is a wasteful number, since it uses less digits than its factorization.

431541320503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24882.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 431541320503 its reverse (305023145134), we get a palindrome (736564465637).

The spelling of 431541320503 in words is "four hundred thirty-one billion, five hundred forty-one million, three hundred twenty thousand, five hundred three".