1307691213 has 4 divisors (see below), whose sum is σ = 1743588288. Its totient is φ = 871794140.

The previous prime is 1307691179. The next prime is 1307691223. The reversal of 1307691213 is 3121967031.

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.

It is a cyclic number.

It is not a de Polignac number, because 1307691213 - 2⁶ = 1307691149 is a prime.

It is a super-2 number, since 2×1307691213² = 3420112617114822738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1307691223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217948533 + ... + 217948538.

It is an arithmetic number, because the mean of its divisors is an integer number (435897072).

Almost surely, 2^1307691213 is an apocalyptic number.

It is an amenable number.

1307691213 is a deficient number, since it is larger than the sum of its proper divisors (435897075).

1307691213 is an equidigital number, since it uses as much as digits as its factorization.

1307691213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435897074.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 1307691213 is about 36162.0133980397. The cubic root of 1307691213 is about 1093.5409946519.

The spelling of 1307691213 in words is "one billion, three hundred seven million, six hundred ninety-one thousand, two hundred thirteen".