102206431 has 8 divisors (see below), whose sum is σ = 108782784. Its totient is φ = 95692800.

The previous prime is 102206407. The next prime is 102206437. The reversal of 102206431 is 134602201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102206431 - 2¹⁷ = 102075359 is a prime.

It is a super-2 number, since 2×102206431² = 20892309075515522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102206399 and 102206408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102206437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12295 + ... + 18856.

It is an arithmetic number, because the mean of its divisors is an integer number (13597848).

Almost surely, 2^102206431 is an apocalyptic number.

102206431 is a deficient number, since it is larger than the sum of its proper divisors (6576353).

102206431 is a wasteful number, since it uses less digits than its factorization.

102206431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31361.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 102206431 is about 10109.7196301381. The cubic root of 102206431 is about 467.5478609240.

Adding to 102206431 its reverse (134602201), we get a palindrome (236808632).

The spelling of 102206431 in words is "one hundred two million, two hundred six thousand, four hundred thirty-one".