42846871232531 has 2 divisors, whose sum is σ = 42846871232532. Its totient is φ = 42846871232530.

The previous prime is 42846871232513. The next prime is 42846871232569. The reversal of 42846871232531 is 13523217864824.

It is a happy number.

Together with previous prime (42846871232513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42846871232531 is a prime.

It is a super-2 number, since 2×42846871232531² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42846871232591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21423435616265 + 21423435616266.

It is an arithmetic number, because the mean of its divisors is an integer number (21423435616266).

Almost surely, 2^{42846871232531} is an apocalyptic number.

42846871232531 is a deficient number, since it is larger than the sum of its proper divisors (1).

42846871232531 is an equidigital number, since it uses as much as digits as its factorization.

42846871232531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15482880, while the sum is 56.

The spelling of 42846871232531 in words is "forty-two trillion, eight hundred forty-six billion, eight hundred seventy-one million, two hundred thirty-two thousand, five hundred thirty-one".