102286439631 has 20 divisors (see below), whose sum is σ = 153642472984. Its totient is φ = 67814204400.

The previous prime is 102286439621. The next prime is 102286439687. The reversal of 102286439631 is 136934682201.

102286439631 is a `hidden beast` number, since 1 + 0 + 2 + 2 + 8 + 6 + 4 + 3 + 9 + 631 = 666.

It is not a de Polignac number, because 102286439631 - 2⁹ = 102286439119 is a prime.

It is a super-2 number, since 2×102286439631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102286439611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3473725 + ... + 3503046.

Almost surely, 2^102286439631 is an apocalyptic number.

102286439631 is a deficient number, since it is larger than the sum of its proper divisors (51356033353).

102286439631 is an equidigital number, since it uses as much as digits as its factorization.

102286439631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6976964 (or 6976955 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 102286439631 in words is "one hundred two billion, two hundred eighty-six million, four hundred thirty-nine thousand, six hundred thirty-one".