1131867143 has 4 divisors (see below), whose sum is σ = 1234764168. Its totient is φ = 1028970120.

The previous prime is 1131867137. The next prime is 1131867179. The reversal of 1131867143 is 3417681311.

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

It is a cyclic number.

It is not a de Polignac number, because 1131867143 - 2⁴ = 1131867127 is a prime.

It is a super-2 number, since 2×1131867143² = 2562246458805964898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131867193) 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, 51448496 + ... + 51448517.

It is an arithmetic number, because the mean of its divisors is an integer number (308691042).

Almost surely, 2^1131867143 is an apocalyptic number.

1131867143 is a deficient number, since it is larger than the sum of its proper divisors (102897025).

1131867143 is a wasteful number, since it uses less digits than its factorization.

1131867143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102897024.

The product of its digits is 12096, while the sum is 35.

The square root of 1131867143 is about 33643.2332423624. The cubic root of 1131867143 is about 1042.1538029289.

The spelling of 1131867143 in words is "one billion, one hundred thirty-one million, eight hundred sixty-seven thousand, one hundred forty-three".