102443143431 has 4 divisors (see below), whose sum is σ = 136590857912. Its totient is φ = 68295428952.

The previous prime is 102443143409. The next prime is 102443143433. The reversal of 102443143431 is 134341344201.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 102443143431 - 2⁶ = 102443143367 is a prime.

It is a super-2 number, since 2×102443143431² (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 (102443143433) 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, 17073857236 + ... + 17073857241.

It is an arithmetic number, because the mean of its divisors is an integer number (34147714478).

Almost surely, 2^102443143431 is an apocalyptic number.

102443143431 is a deficient number, since it is larger than the sum of its proper divisors (34147714481).

102443143431 is an equidigital number, since it uses as much as digits as its factorization.

102443143431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34147714480.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 102443143431 its reverse (134341344201), we get a palindrome (236784487632).

The spelling of 102443143431 in words is "one hundred two billion, four hundred forty-three million, one hundred forty-three thousand, four hundred thirty-one".