102143431 has 12 divisors (see below), whose sum is σ = 111864240. Its totient is φ = 93213120.

The previous prime is 102143413. The next prime is 102143453. The reversal of 102143431 is 134341201.

It is not a de Polignac number, because 102143431 - 2¹³ = 102135239 is a prime.

It is a super-2 number, since 2×102143431² = 20866560992903522, 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 = 102143399 and 102143408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102143471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11646 + ... + 18436.

It is an arithmetic number, because the mean of its divisors is an integer number (9322020).

Almost surely, 2^102143431 is an apocalyptic number.

102143431 is a deficient number, since it is larger than the sum of its proper divisors (9720809).

102143431 is an equidigital number, since it uses as much as digits as its factorization.

102143431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6906 (or 6893 counting only the distinct ones).

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

The square root of 102143431 is about 10106.6033364331. The cubic root of 102143431 is about 467.4517757457.

Adding to 102143431 its reverse (134341201), we get a palindrome (236484632).

The spelling of 102143431 in words is "one hundred two million, one hundred forty-three thousand, four hundred thirty-one".