3115047961 has 4 divisors (see below), whose sum is σ = 3115167952. Its totient is φ = 3114927972.

The previous prime is 3115047931. The next prime is 3115047983. The reversal of 3115047961 is 1697405113.

It is a happy number.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3115047961 - 2¹⁹ = 3114523673 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 3115047961.

It is not an unprimeable number, because it can be changed into a prime (3115047911) 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, 3015 + ... + 78988.

It is an arithmetic number, because the mean of its divisors is an integer number (778791988).

Almost surely, 2^3115047961 is an apocalyptic number.

It is an amenable number.

3115047961 is a deficient number, since it is larger than the sum of its proper divisors (119991).

3115047961 is an equidigital number, since it uses as much as digits as its factorization.

3115047961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119990.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 3115047961 is about 55812.6147120882. The cubic root of 3115047961 is about 1460.4552219383.

The spelling of 3115047961 in words is "three billion, one hundred fifteen million, forty-seven thousand, nine hundred sixty-one".