1143231001 has 8 divisors (see below), whose sum is σ = 1248315264. Its totient is φ = 1038339120.

The previous prime is 1143230999. The next prime is 1143231029. The reversal of 1143231001 is 1001323411.

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

It is a cyclic number.

It is not a de Polignac number, because 1143231001 - 2¹ = 1143230999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143231091) 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, 35521 + ... + 59566.

It is an arithmetic number, because the mean of its divisors is an integer number (156039408).

Almost surely, 2^1143231001 is an apocalyptic number.

1143231001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1143231001 is a deficient number, since it is larger than the sum of its proper divisors (105084263).

1143231001 is a wasteful number, since it uses less digits than its factorization.

1143231001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96191.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1143231001 is about 33811.6991735109. The cubic root of 1143231001 is about 1045.6299098234.

Adding to 1143231001 its reverse (1001323411), we get a palindrome (2144554412).

The spelling of 1143231001 in words is "one billion, one hundred forty-three million, two hundred thirty-one thousand, one".