42351431533 has 2 divisors, whose sum is σ = 42351431534. Its totient is φ = 42351431532.

The previous prime is 42351431519. The next prime is 42351431567. The reversal of 42351431533 is 33513415324.

It is an a-pointer prime, because the next prime (42351431567) can be obtained adding 42351431533 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37451151529 + 4900280004 = 193523^2 + 70002^2 .

It is a cyclic number.

It is not a de Polignac number, because 42351431533 - 2²¹ = 42349334381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42351431503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21175715766 + 21175715767.

It is an arithmetic number, because the mean of its divisors is an integer number (21175715767).

Almost surely, 2^42351431533 is an apocalyptic number.

It is an amenable number.

42351431533 is a deficient number, since it is larger than the sum of its proper divisors (1).

42351431533 is an equidigital number, since it uses as much as digits as its factorization.

42351431533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 34.

Adding to 42351431533 its reverse (33513415324), we get a palindrome (75864846857).

The spelling of 42351431533 in words is "forty-two billion, three hundred fifty-one million, four hundred thirty-one thousand, five hundred thirty-three".