42131543131 has 2 divisors, whose sum is σ = 42131543132. Its totient is φ = 42131543130.

The previous prime is 42131543093. The next prime is 42131543149. The reversal of 42131543131 is 13134513124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42131543131 - 2²¹ = 42129445979 is a prime.

It is a super-2 number, since 2×42131543131² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42131543131.

It is not a weakly prime, because it can be changed into another prime (42131543161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21065771565 + 21065771566.

It is an arithmetic number, because the mean of its divisors is an integer number (21065771566).

Almost surely, 2^42131543131 is an apocalyptic number.

42131543131 is a deficient number, since it is larger than the sum of its proper divisors (1).

42131543131 is an equidigital number, since it uses as much as digits as its factorization.

42131543131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 28.

The spelling of 42131543131 in words is "forty-two billion, one hundred thirty-one million, five hundred forty-three thousand, one hundred thirty-one".