1143313401 has 16 divisors (see below), whose sum is σ = 1531857600. Its totient is φ = 758499648.

The previous prime is 1143313397. The next prime is 1143313433. The reversal of 1143313401 is 1043133411.

It is not a de Polignac number, because 1143313401 - 2² = 1143313397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1143313481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 684195 + ... + 685863.

It is an arithmetic number, because the mean of its divisors is an integer number (95741100).

Almost surely, 2^1143313401 is an apocalyptic number.

It is an amenable number.

1143313401 is a deficient number, since it is larger than the sum of its proper divisors (388544199).

1143313401 is a wasteful number, since it uses less digits than its factorization.

1143313401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2648.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1143313401 is about 33812.9176647032. The cubic root of 1143313401 is about 1045.6550309741.

Adding to 1143313401 its reverse (1043133411), we get a palindrome (2186446812).

The spelling of 1143313401 in words is "one billion, one hundred forty-three million, three hundred thirteen thousand, four hundred one".