115311947 has 4 divisors (see below), whose sum is σ = 116046576. Its totient is φ = 114577320.

The previous prime is 115311907. The next prime is 115311953. The reversal of 115311947 is 749113511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749113511 = 211 ⋅3550301.

It is a cyclic number.

It is not a de Polignac number, because 115311947 - 2¹² = 115307851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115311907) 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, 367079 + ... + 367392.

It is an arithmetic number, because the mean of its divisors is an integer number (29011644).

Almost surely, 2^115311947 is an apocalyptic number.

115311947 is a deficient number, since it is larger than the sum of its proper divisors (734629).

115311947 is an equidigital number, since it uses as much as digits as its factorization.

115311947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734628.

The product of its digits is 3780, while the sum is 32.

The square root of 115311947 is about 10738.3400486295. The cubic root of 115311947 is about 486.7337207184.

The spelling of 115311947 in words is "one hundred fifteen million, three hundred eleven thousand, nine hundred forty-seven".