1143211401 has 20 divisors (see below), whose sum is σ = 1708671492. Its totient is φ = 761734368.

The previous prime is 1143211367. The next prime is 1143211403. The reversal of 1143211401 is 1041123411.

1143211401 is a `hidden beast` number, since 11 + 43 + 211 + 401 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1038128400 + 105083001 = 32220^2 + 10251^2 .

It is not a de Polignac number, because 1143211401 - 2⁶ = 1143211337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1143211403) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 282871 + ... + 286883.

Almost surely, 2^1143211401 is an apocalyptic number.

It is an amenable number.

1143211401 is a deficient number, since it is larger than the sum of its proper divisors (565460091).

1143211401 is an equidigital number, since it uses as much as digits as its factorization.

1143211401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7542 (or 7533 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1143211401 is about 33811.4093317626. The cubic root of 1143211401 is about 1045.6239342264.

Adding to 1143211401 its reverse (1041123411), we get a palindrome (2184334812).

The spelling of 1143211401 in words is "one billion, one hundred forty-three million, two hundred eleven thousand, four hundred one".