2011143402 has 24 divisors (see below), whose sum is σ = 4381827840. Its totient is φ = 666634920.

The previous prime is 2011143371. The next prime is 2011143403. The reversal of 2011143402 is 2043411102.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 11 ways as a sum of consecutive naturals, for example, 308874 + ... + 315317.

It is an arithmetic number, because the mean of its divisors is an integer number (182576160).

Almost surely, 2^2011143402 is an apocalyptic number.

2011143402 is an abundant number, since it is smaller than the sum of its proper divisors (2370684438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2011143402 is a wasteful number, since it uses less digits than its factorization.

2011143402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624378 (or 624375 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2011143402 is about 44845.7735132309. The cubic root of 2011143402 is about 1262.2566852215.

Adding to 2011143402 its reverse (2043411102), we get a palindrome (4054554504).

The spelling of 2011143402 in words is "two billion, eleven million, one hundred forty-three thousand, four hundred two".