1315972223 has 4 divisors (see below), whose sum is σ = 1343971680. Its totient is φ = 1287972768.

The previous prime is 1315972201. The next prime is 1315972249. The reversal of 1315972223 is 3222795131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3222795131 = 83 ⋅38828857.

It is a cyclic number.

It is not a de Polignac number, because 1315972223 - 2¹⁰ = 1315971199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315972523) 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, 13999658 + ... + 13999751.

It is an arithmetic number, because the mean of its divisors is an integer number (335992920).

Almost surely, 2^1315972223 is an apocalyptic number.

1315972223 is a deficient number, since it is larger than the sum of its proper divisors (27999457).

1315972223 is an equidigital number, since it uses as much as digits as its factorization.

1315972223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27999456.

The product of its digits is 22680, while the sum is 35.

The square root of 1315972223 is about 36276.3314435184. The cubic root of 1315972223 is about 1095.8444374798.

The spelling of 1315972223 in words is "one billion, three hundred fifteen million, nine hundred seventy-two thousand, two hundred twenty-three".