1311423430 has 32 divisors (see below), whose sum is σ = 2466422784. Its totient is φ = 501104736.

The previous prime is 1311423409. The next prime is 1311423437. The reversal of 1311423430 is 343241131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311423437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195187 + ... + 201793.

It is an arithmetic number, because the mean of its divisors is an integer number (77075712).

Almost surely, 2^1311423430 is an apocalyptic number.

1311423430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311423430 is a deficient number, since it is larger than the sum of its proper divisors (1154999354).

1311423430 is a wasteful number, since it uses less digits than its factorization.

1311423430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7500.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1311423430 is about 36213.5807398274. The cubic root of 1311423430 is about 1094.5803469644.

Adding to 1311423430 its reverse (343241131), we get a palindrome (1654664561).

The spelling of 1311423430 in words is "one billion, three hundred eleven million, four hundred twenty-three thousand, four hundred thirty".