102143231 has 8 divisors (see below), whose sum is σ = 103499760. Its totient is φ = 100793088.

The previous prime is 102143159. The next prime is 102143257. The reversal of 102143231 is 132341201.

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

It is a de Polignac number, because none of the positive numbers 2^k-102143231 is a prime.

It is a super-2 number, since 2×102143231² = 20866479278238722, which 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 (102143291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36380 + ... + 39086.

It is an arithmetic number, because the mean of its divisors is an integer number (12937470).

Almost surely, 2^102143231 is an apocalyptic number.

102143231 is a deficient number, since it is larger than the sum of its proper divisors (1356529).

102143231 is an equidigital number, since it uses as much as digits as its factorization.

102143231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3193.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 102143231 is about 10106.5934419071. The cubic root of 102143231 is about 467.4514706505.

Adding to 102143231 its reverse (132341201), we get a palindrome (234484432).

The spelling of 102143231 in words is "one hundred two million, one hundred forty-three thousand, two hundred thirty-one".