1105311972 has 24 divisors (see below), whose sum is σ = 2633936256. Its totient is φ = 360598048.

The previous prime is 1105311971. The next prime is 1105312007. The reversal of 1105311972 is 2791135011.

It is not an unprimeable number, because it can be changed into a prime (1105311971) 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, 979323 + ... + 980450.

It is an arithmetic number, because the mean of its divisors is an integer number (109747344).

Almost surely, 2^1105311972 is an apocalyptic number.

1105311972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1105311972 is an abundant number, since it is smaller than the sum of its proper divisors (1528624284).

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

1105311972 is a wasteful number, since it uses less digits than its factorization.

1105311972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1959827 (or 1959825 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 30.

The square root of 1105311972 is about 33246.2324482038. The cubic root of 1105311972 is about 1033.9390972862.

Adding to 1105311972 its reverse (2791135011), we get a palindrome (3896446983).

The spelling of 1105311972 in words is "one billion, one hundred five million, three hundred eleven thousand, nine hundred seventy-two".