1311031430 has 16 divisors (see below), whose sum is σ = 2367915984. Its totient is φ = 522621600.

The previous prime is 1311031427. The next prime is 1311031433. The reversal of 1311031430 is 341301131.

It is an interprime number because it is at equal distance from previous prime (1311031427) and next prime (1311031433).

It is a junction number, because it is equal to n+sod(n) for n = 1311031399 and 1311031408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311031433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220796 + ... + 226655.

It is an arithmetic number, because the mean of its divisors is an integer number (147994749).

Almost surely, 2^1311031430 is an apocalyptic number.

1311031430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311031430 is a deficient number, since it is larger than the sum of its proper divisors (1056884554).

1311031430 is a wasteful number, since it uses less digits than its factorization.

1311031430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447751.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1311031430 is about 36208.1680011569. The cubic root of 1311031430 is about 1094.4712750849.

Adding to 1311031430 its reverse (341301131), we get a palindrome (1652332561).

The spelling of 1311031430 in words is "one billion, three hundred eleven million, thirty-one thousand, four hundred thirty".