1230131143 has 4 divisors (see below), whose sum is σ = 1258738888. Its totient is φ = 1201523400.

The previous prime is 1230131129. The next prime is 1230131153. The reversal of 1230131143 is 3411310321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1230131143 is a prime.

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 1230131143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230131153) 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, 14303808 + ... + 14303893.

It is an arithmetic number, because the mean of its divisors is an integer number (314684722).

Almost surely, 2^1230131143 is an apocalyptic number.

1230131143 is a deficient number, since it is larger than the sum of its proper divisors (28607745).

1230131143 is an equidigital number, since it uses as much as digits as its factorization.

1230131143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28607744.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1230131143 is about 35073.2254433492. The cubic root of 1230131143 is about 1071.4793474764.

Adding to 1230131143 its reverse (3411310321), we get a palindrome (4641441464).

The spelling of 1230131143 in words is "one billion, two hundred thirty million, one hundred thirty-one thousand, one hundred forty-three".