1143345401 has 4 divisors (see below), whose sum is σ = 1247285904. Its totient is φ = 1039404900.

The previous prime is 1143345389. The next prime is 1143345451. The reversal of 1143345401 is 1045433411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1143345401 - 2²⁶ = 1076236537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143345451) 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, 51970235 + ... + 51970256.

It is an arithmetic number, because the mean of its divisors is an integer number (311821476).

Almost surely, 2^1143345401 is an apocalyptic number.

1143345401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1143345401 is a deficient number, since it is larger than the sum of its proper divisors (103940503).

1143345401 is a wasteful number, since it uses less digits than its factorization.

1143345401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103940502.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1143345401 is about 33813.3908533291. The cubic root of 1143345401 is about 1045.6647864353.

Adding to 1143345401 its reverse (1045433411), we get a palindrome (2188778812).

The spelling of 1143345401 in words is "one billion, one hundred forty-three million, three hundred forty-five thousand, four hundred one".