1311022430 has 16 divisors (see below), whose sum is σ = 2441214720. Its totient is φ = 506325792.

The previous prime is 1311022429. The next prime is 1311022501. The reversal of 1311022430 is 342201131.

It is a junction number, because it is equal to n+sod(n) for n = 1311022399 and 1311022408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2260094 + ... + 2260673.

It is an arithmetic number, because the mean of its divisors is an integer number (152575920).

Almost surely, 2^1311022430 is an apocalyptic number.

1311022430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311022430 is a deficient number, since it is larger than the sum of its proper divisors (1130192290).

1311022430 is a wasteful number, since it uses less digits than its factorization.

1311022430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4520803.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1311022430 is about 36208.0437195936. The cubic root of 1311022430 is about 1094.4687706283.

Adding to 1311022430 its reverse (342201131), we get a palindrome (1653223561).

The spelling of 1311022430 in words is "one billion, three hundred eleven million, twenty-two thousand, four hundred thirty".