307730972747 has 4 divisors (see below), whose sum is σ = 335706515736. Its totient is φ = 279755429760.

The previous prime is 307730972743. The next prime is 307730972749. The reversal of 307730972747 is 747279037703.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 307730972747 - 2² = 307730972743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 307730972692 and 307730972701.

It is not an unprimeable number, because it can be changed into a prime (307730972743) 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, 13987771478 + ... + 13987771499.

It is an arithmetic number, because the mean of its divisors is an integer number (83926628934).

Almost surely, 2^307730972747 is an apocalyptic number.

307730972747 is a deficient number, since it is larger than the sum of its proper divisors (27975542989).

307730972747 is a wasteful number, since it uses less digits than its factorization.

307730972747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27975542988.

The product of its (nonzero) digits is 10890936, while the sum is 56.

The spelling of 307730972747 in words is "three hundred seven billion, seven hundred thirty million, nine hundred seventy-two thousand, seven hundred forty-seven".