42351431503 has 2 divisors, whose sum is σ = 42351431504. Its totient is φ = 42351431502.

The previous prime is 42351431483. The next prime is 42351431519. The reversal of 42351431503 is 30513415324.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42351431503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42351431533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21175715751 + 21175715752.

It is an arithmetic number, because the mean of its divisors is an integer number (21175715752).

Almost surely, 2^42351431503 is an apocalyptic number.

42351431503 is a deficient number, since it is larger than the sum of its proper divisors (1).

42351431503 is an equidigital number, since it uses as much as digits as its factorization.

42351431503 is an evil number, because the sum of its binary digits is even.

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

Adding to 42351431503 its reverse (30513415324), we get a palindrome (72864846827).

The spelling of 42351431503 in words is "forty-two billion, three hundred fifty-one million, four hundred thirty-one thousand, five hundred three".