1141431011 has 4 divisors (see below), whose sum is σ = 1304492592. Its totient is φ = 978369432.

The previous prime is 1141431007. The next prime is 1141431013. The reversal of 1141431011 is 1101341411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1101341411 = 5897 ⋅186763.

It is a cyclic number.

It is not a de Polignac number, because 1141431011 - 2² = 1141431007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1141431013) 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, 81530780 + ... + 81530793.

It is an arithmetic number, because the mean of its divisors is an integer number (326123148).

Almost surely, 2^1141431011 is an apocalyptic number.

1141431011 is a deficient number, since it is larger than the sum of its proper divisors (163061581).

1141431011 is an equidigital number, since it uses as much as digits as its factorization.

1141431011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163061580.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 1141431011 is about 33785.0708301759. The cubic root of 1141431011 is about 1045.0808484261.

Adding to 1141431011 its reverse (1101341411), we get a palindrome (2242772422).

The spelling of 1141431011 in words is "one billion, one hundred forty-one million, four hundred thirty-one thousand, eleven".