1011323144 has 32 divisors (see below), whose sum is σ = 2057711040. Its totient is φ = 463195200.

The previous prime is 1011323143. The next prime is 1011323153. The reversal of 1011323144 is 4413231101.

It is not an unprimeable number, because it can be changed into a prime (1011323143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23492 + ... + 50739.

It is an arithmetic number, because the mean of its divisors is an integer number (64303470).

Almost surely, 2^1011323144 is an apocalyptic number.

It is an amenable number.

1011323144 is an abundant number, since it is smaller than the sum of its proper divisors (1046387896).

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

1011323144 is a wasteful number, since it uses less digits than its factorization.

1011323144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74381 (or 74377 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1011323144 is about 31801.3072687272. The cubic root of 1011323144 is about 1003.7602243241.

Adding to 1011323144 its reverse (4413231101), we get a palindrome (5424554245).

The spelling of 1011323144 in words is "one billion, eleven million, three hundred twenty-three thousand, one hundred forty-four".