2721311361 has 6 divisors (see below), whose sum is σ = 3930783090. Its totient is φ = 1814207568.

The previous prime is 2721311353. The next prime is 2721311371. The reversal of 2721311361 is 1631131272.

2721311361 is a `hidden beast` number, since 272 + 1 + 31 + 1 + 361 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1846334961 + 874976400 = 42969^2 + 29580^2 .

It is not a de Polignac number, because 2721311361 - 2³ = 2721311353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2721311371) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 151183956 + ... + 151183973.

It is an arithmetic number, because the mean of its divisors is an integer number (655130515).

Almost surely, 2^2721311361 is an apocalyptic number.

It is an amenable number.

2721311361 is a deficient number, since it is larger than the sum of its proper divisors (1209471729).

2721311361 is a wasteful number, since it uses less digits than its factorization.

2721311361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302367935 (or 302367932 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 2721311361 is about 52166.1898263617. The cubic root of 2721311361 is about 1396.1307038824.

The spelling of 2721311361 in words is "two billion, seven hundred twenty-one million, three hundred eleven thousand, three hundred sixty-one".