1312240430 has 32 divisors (see below), whose sum is σ = 2446273440. Its totient is φ = 506217600.

The previous prime is 1312240399. The next prime is 1312240441. The reversal of 1312240430 is 340422131.

It is a super-2 number, since 2×1312240430² = 3443949892253169800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 321905 + ... + 325955.

It is an arithmetic number, because the mean of its divisors is an integer number (76446045).

Almost surely, 2^1312240430 is an apocalyptic number.

1312240430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312240430 is a deficient number, since it is larger than the sum of its proper divisors (1134033010).

1312240430 is a wasteful number, since it uses less digits than its factorization.

1312240430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5204.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1312240430 is about 36224.8592819903. The cubic root of 1312240430 is about 1094.8076029573.

Adding to 1312240430 its reverse (340422131), we get a palindrome (1652662561).

The spelling of 1312240430 in words is "one billion, three hundred twelve million, two hundred forty thousand, four hundred thirty".