1312123430 has 8 divisors (see below), whose sum is σ = 2361822192. Its totient is φ = 524849368.

The previous prime is 1312123429. The next prime is 1312123433. The reversal of 1312123430 is 343212131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312123433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65606162 + ... + 65606181.

It is an arithmetic number, because the mean of its divisors is an integer number (295227774).

Almost surely, 2^1312123430 is an apocalyptic number.

1312123430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312123430 is a deficient number, since it is larger than the sum of its proper divisors (1049698762).

1312123430 is a wasteful number, since it uses less digits than its factorization.

1312123430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131212350.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1312123430 is about 36223.2443328866. The cubic root of 1312123430 is about 1094.7750641293.

Adding to 1312123430 its reverse (343212131), we get a palindrome (1655335561).

The spelling of 1312123430 in words is "one billion, three hundred twelve million, one hundred twenty-three thousand, four hundred thirty".