1143235151 has 4 divisors (see below), whose sum is σ = 1146959352. Its totient is φ = 1139510952.

The previous prime is 1143235127. The next prime is 1143235157. The reversal of 1143235151 is 1515323411.

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-1143235151 is a prime.

It is a super-2 number, since 2×1143235151² = 2613973220963985602, which contains 22 as substring.

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 1143235151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143235157) 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, 1861640 + ... + 1862253.

It is an arithmetic number, because the mean of its divisors is an integer number (286739838).

Almost surely, 2^1143235151 is an apocalyptic number.

1143235151 is a deficient number, since it is larger than the sum of its proper divisors (3724201).

1143235151 is an equidigital number, since it uses as much as digits as its factorization.

1143235151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3724200.

The product of its digits is 1800, while the sum is 26.

The square root of 1143235151 is about 33811.7605427461. The cubic root of 1143235151 is about 1045.6311750559.

Adding to 1143235151 its reverse (1515323411), we get a palindrome (2658558562).

The spelling of 1143235151 in words is "one billion, one hundred forty-three million, two hundred thirty-five thousand, one hundred fifty-one".