87305677631 has 2 divisors, whose sum is σ = 87305677632. Its totient is φ = 87305677630.

The previous prime is 87305677619. The next prime is 87305677643. The reversal of 87305677631 is 13677650378.

It is a balanced prime because it is at equal distance from previous prime (87305677619) and next prime (87305677643).

It is a cyclic number.

It is not a de Polignac number, because 87305677631 - 2⁶ = 87305677567 is a prime.

It is a super-2 number, since 2×87305677631² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87305677231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43652838815 + 43652838816.

It is an arithmetic number, because the mean of its divisors is an integer number (43652838816).

Almost surely, 2^87305677631 is an apocalyptic number.

87305677631 is a deficient number, since it is larger than the sum of its proper divisors (1).

87305677631 is an equidigital number, since it uses as much as digits as its factorization.

87305677631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4445280, while the sum is 53.

The spelling of 87305677631 in words is "eighty-seven billion, three hundred five million, six hundred seventy-seven thousand, six hundred thirty-one".