102434220431 has 4 divisors (see below), whose sum is σ = 102434901072. Its totient is φ = 102433539792.

The previous prime is 102434220401. The next prime is 102434220509. The reversal of 102434220431 is 134022434201.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102434220431 is a prime.

It is a super-2 number, since 2×102434220431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102434220431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102434220401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3371 + ... + 452636.

It is an arithmetic number, because the mean of its divisors is an integer number (25608725268).

Almost surely, 2^102434220431 is an apocalyptic number.

102434220431 is a deficient number, since it is larger than the sum of its proper divisors (680641).

102434220431 is an equidigital number, since it uses as much as digits as its factorization.

102434220431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680640.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 102434220431 its reverse (134022434201), we get a palindrome (236456654632).

The spelling of 102434220431 in words is "one hundred two billion, four hundred thirty-four million, two hundred twenty thousand, four hundred thirty-one".