1272991315 has 8 divisors (see below), whose sum is σ = 1530069120. Its totient is φ = 1016740032.

The previous prime is 1272991309. The next prime is 1272991339. The reversal of 1272991315 is 5131992721.

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

It is a cyclic number.

It is not a de Polignac number, because 1272991315 - 2¹³ = 1272983123 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203235 + ... + 209404.

It is an arithmetic number, because the mean of its divisors is an integer number (191258640).

Almost surely, 2^1272991315 is an apocalyptic number.

1272991315 is a deficient number, since it is larger than the sum of its proper divisors (257077805).

1272991315 is an equidigital number, since it uses as much as digits as its factorization.

1272991315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413261.

The product of its digits is 34020, while the sum is 40.

The square root of 1272991315 is about 35679.0038397935. The cubic root of 1272991315 is about 1083.7817000599.

The spelling of 1272991315 in words is "one billion, two hundred seventy-two million, nine hundred ninety-one thousand, three hundred fifteen".