2011143401 has 4 divisors (see below), whose sum is σ = 2129445972. Its totient is φ = 1892840832.

The previous prime is 2011143371. The next prime is 2011143403. The reversal of 2011143401 is 1043411102.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 892575376 + 1118568025 = 29876^2 + 33445^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011143401 - 2¹⁴ = 2011127017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 118302553 = 2011143401 / (2 + 0 + 1 + 1 + 1 + 4 + 3 + 4 + 0 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2011143401.

It is not an unprimeable number, because it can be changed into a prime (2011143403) 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, 59151260 + ... + 59151293.

It is an arithmetic number, because the mean of its divisors is an integer number (532361493).

Almost surely, 2^2011143401 is an apocalyptic number.

It is an amenable number.

2011143401 is a deficient number, since it is larger than the sum of its proper divisors (118302571).

2011143401 is a wasteful number, since it uses less digits than its factorization.

2011143401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118302570.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 2011143401 is about 44845.7735020816. The cubic root of 2011143401 is about 1262.2566850123.

Adding to 2011143401 its reverse (1043411102), we get a palindrome (3054554503).

The spelling of 2011143401 in words is "two billion, eleven million, one hundred forty-three thousand, four hundred one".