1273113215 has 8 divisors (see below), whose sum is σ = 1666621008. Its totient is φ = 925900480.

The previous prime is 1273113199. The next prime is 1273113217. The reversal of 1273113215 is 5123113721.

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

It is not a de Polignac number, because 1273113215 - 2⁴ = 1273113199 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 (1273113217) 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, 11573702 + ... + 11573811.

It is an arithmetic number, because the mean of its divisors is an integer number (208327626).

Almost surely, 2^1273113215 is an apocalyptic number.

1273113215 is a deficient number, since it is larger than the sum of its proper divisors (393507793).

1273113215 is a wasteful number, since it uses less digits than its factorization.

1273113215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23147529.

The product of its digits is 1260, while the sum is 26.

The square root of 1273113215 is about 35680.7120865041. The cubic root of 1273113215 is about 1083.8162927998.

Adding to 1273113215 its reverse (5123113721), we get a palindrome (6396226936).

The spelling of 1273113215 in words is "one billion, two hundred seventy-three million, one hundred thirteen thousand, two hundred fifteen".