1141421231 has 4 divisors (see below), whose sum is σ = 1148980464. Its totient is φ = 1133862000.

The previous prime is 1141421221. The next prime is 1141421233. The reversal of 1141421231 is 1321241411.

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 1141421231 - 2¹⁰ = 1141420207 is a prime.

It is a super-2 number, since 2×1141421231² = 2605684853155110722, 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 (1141421233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3779390 + ... + 3779691.

It is an arithmetic number, because the mean of its divisors is an integer number (287245116).

Almost surely, 2^1141421231 is an apocalyptic number.

1141421231 is a deficient number, since it is larger than the sum of its proper divisors (7559233).

1141421231 is an equidigital number, since it uses as much as digits as its factorization.

1141421231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7559232.

The product of its digits is 192, while the sum is 20.

The square root of 1141421231 is about 33784.9260913799. The cubic root of 1141421231 is about 1045.0778635998.

Adding to 1141421231 its reverse (1321241411), we get a palindrome (2462662642).

The spelling of 1141421231 in words is "one billion, one hundred forty-one million, four hundred twenty-one thousand, two hundred thirty-one".