42831083881 has 4 divisors (see below), whose sum is σ = 42926476500. Its totient is φ = 42735691264.

The previous prime is 42831083863. The next prime is 42831083899. The reversal of 42831083881 is 18838013824.

42831083881 = 146340² + 146341².

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (42831083863) and next prime (42831083899).

It can be written as a sum of positive squares in 2 ways, for example, as 21415688281 + 21415395600 = 146341^2 + 146340^2 .

It is a cyclic number.

It is not a de Polignac number, because 42831083881 - 2²¹ = 42828986729 is a prime.

It is a super-2 number, since 2×42831083881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42831083681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47695636 + ... + 47696533.

It is an arithmetic number, because the mean of its divisors is an integer number (10731619125).

Almost surely, 2^42831083881 is an apocalyptic number.

42831083881 is the 146341-st centered square number.

It is an amenable number.

42831083881 is a deficient number, since it is larger than the sum of its proper divisors (95392619).

42831083881 is an equidigital number, since it uses as much as digits as its factorization.

42831083881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95392618.

The product of its (nonzero) digits is 294912, while the sum is 46.

The spelling of 42831083881 in words is "forty-two billion, eight hundred thirty-one million, eighty-three thousand, eight hundred eighty-one".