1315215123 has 8 divisors (see below), whose sum is σ = 1753976208. Its totient is φ = 876632064.

The previous prime is 1315215119. The next prime is 1315215127. The reversal of 1315215123 is 3215125131.

It is an interprime number because it is at equal distance from previous prime (1315215119) and next prime (1315215127).

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

It is not a de Polignac number, because 1315215123 - 2² = 1315215119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1315215093 and 1315215102.

It is not an unprimeable number, because it can be changed into a prime (1315215127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26190 + ... + 57587.

It is an arithmetic number, because the mean of its divisors is an integer number (219247026).

Almost surely, 2^1315215123 is an apocalyptic number.

1315215123 is a deficient number, since it is larger than the sum of its proper divisors (438761085).

1315215123 is an equidigital number, since it uses as much as digits as its factorization.

1315215123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89013.

The product of its digits is 900, while the sum is 24.

The square root of 1315215123 is about 36265.8947635378. The cubic root of 1315215123 is about 1095.6342448515.

The spelling of 1315215123 in words is "one billion, three hundred fifteen million, two hundred fifteen thousand, one hundred twenty-three".