1141345231 has 4 divisors (see below), whose sum is σ = 1229141032. Its totient is φ = 1053549432.

The previous prime is 1141345223. The next prime is 1141345237. The reversal of 1141345231 is 1325431411.

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

It is not a de Polignac number, because 1141345231 - 2³ = 1141345223 is a prime.

It is a super-2 number, since 2×1141345231² = 2605337872652886722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1141345196 and 1141345205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1141345237) 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, 43897881 + ... + 43897906.

It is an arithmetic number, because the mean of its divisors is an integer number (307285258).

Almost surely, 2^1141345231 is an apocalyptic number.

1141345231 is a deficient number, since it is larger than the sum of its proper divisors (87795801).

1141345231 is an equidigital number, since it uses as much as digits as its factorization.

1141345231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87795800.

The product of its digits is 1440, while the sum is 25.

The square root of 1141345231 is about 33783.8013106873. The cubic root of 1141345231 is about 1045.0546680496.

Adding to 1141345231 its reverse (1325431411), we get a palindrome (2466776642).

It can be divided in two parts, 11413 and 45231, that added together give a square (56644 = 238²).

The spelling of 1141345231 in words is "one billion, one hundred forty-one million, three hundred forty-five thousand, two hundred thirty-one".