87942244331 has 2 divisors, whose sum is σ = 87942244332. Its totient is φ = 87942244330.

The previous prime is 87942244309. The next prime is 87942244333. The reversal of 87942244331 is 13344224978.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87942244331 - 2¹⁸ = 87941982187 is a prime.

It is a super-2 number, since 2×87942244331² (a number of 23 digits) contains 22 as substring.

Together with 87942244333, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87942244333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43971122165 + 43971122166.

It is an arithmetic number, because the mean of its divisors is an integer number (43971122166).

Almost surely, 2^87942244331 is an apocalyptic number.

87942244331 is a deficient number, since it is larger than the sum of its proper divisors (1).

87942244331 is an equidigital number, since it uses as much as digits as its factorization.

87942244331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 47.

The spelling of 87942244331 in words is "eighty-seven billion, nine hundred forty-two million, two hundred forty-four thousand, three hundred thirty-one".