1310423999 has 4 divisors (see below), whose sum is σ = 1310963280. Its totient is φ = 1309884720.

The previous prime is 1310423987. The next prime is 1310424007. The reversal of 1310423999 is 9993240131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1310423999 is a prime.

It is a super-2 number, since 2×1310423999² = 3434422114310304002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310423929) 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, 265979 + ... + 270860.

It is an arithmetic number, because the mean of its divisors is an integer number (327740820).

Almost surely, 2^1310423999 is an apocalyptic number.

1310423999 is a deficient number, since it is larger than the sum of its proper divisors (539281).

1310423999 is an equidigital number, since it uses as much as digits as its factorization.

1310423999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539280.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 1310423999 is about 36199.7789910381. The cubic root of 1310423999 is about 1094.3022177389.

The spelling of 1310423999 in words is "one billion, three hundred ten million, four hundred twenty-three thousand, nine hundred ninety-nine".