102173031481 has 4 divisors (see below), whose sum is σ = 102686464000. Its totient is φ = 101659598964.

The previous prime is 102173031431. The next prime is 102173031497. The reversal of 102173031481 is 184130371201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102173031481 - 2⁹ = 102173030969 is a prime.

It is a super-2 number, since 2×102173031481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102173031431) 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 3 ways as a sum of consecutive naturals, for example, 256715961 + ... + 256716358.

It is an arithmetic number, because the mean of its divisors is an integer number (25671616000).

Almost surely, 2^102173031481 is an apocalyptic number.

It is an amenable number.

102173031481 is a deficient number, since it is larger than the sum of its proper divisors (513432519).

102173031481 is an equidigital number, since it uses as much as digits as its factorization.

102173031481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513432518.

The product of its (nonzero) digits is 4032, while the sum is 31.

The spelling of 102173031481 in words is "one hundred two billion, one hundred seventy-three million, thirty-one thousand, four hundred eighty-one".