1207971113 has 4 divisors (see below), whose sum is σ = 1271548560. Its totient is φ = 1144393668.

The previous prime is 1207971103. The next prime is 1207971119. The reversal of 1207971113 is 3111797021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3111797021 = 191 ⋅16292131.

It is a cyclic number.

It is not a de Polignac number, because 1207971113 - 2¹² = 1207967017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1207971113.

It is not an unprimeable number, because it can be changed into a prime (1207971119) 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, 31788695 + ... + 31788732.

It is an arithmetic number, because the mean of its divisors is an integer number (317887140).

Almost surely, 2^1207971113 is an apocalyptic number.

It is an amenable number.

1207971113 is a deficient number, since it is larger than the sum of its proper divisors (63577447).

1207971113 is an equidigital number, since it uses as much as digits as its factorization.

1207971113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63577446.

The product of its (nonzero) digits is 2646, while the sum is 32.

The square root of 1207971113 is about 34755.8788264662. The cubic root of 1207971113 is about 1065.0063149941.

The spelling of 1207971113 in words is "one billion, two hundred seven million, nine hundred seventy-one thousand, one hundred thirteen".