1102431220 has 24 divisors (see below), whose sum is σ = 2525570208. Its totient is φ = 400884000.

The previous prime is 1102431179. The next prime is 1102431229. The reversal of 1102431220 is 221342011.

It is a junction number, because it is equal to n+sod(n) for n = 1102431194 and 1102431203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102431229) 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, 2505306 + ... + 2505745.

It is an arithmetic number, because the mean of its divisors is an integer number (105232092).

Almost surely, 2^1102431220 is an apocalyptic number.

1102431220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1102431220 is an abundant number, since it is smaller than the sum of its proper divisors (1423138988).

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

1102431220 is a wasteful number, since it uses less digits than its factorization.

1102431220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5011071 (or 5011069 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1102431220 is about 33202.8796943880. The cubic root of 1102431220 is about 1033.0400710169.

Adding to 1102431220 its reverse (221342011), we get a palindrome (1323773231).

The spelling of 1102431220 in words is "one billion, one hundred two million, four hundred thirty-one thousand, two hundred twenty".