2729542331 has 4 divisors (see below), whose sum is σ = 2750378664. Its totient is φ = 2708706000.

The previous prime is 2729542303. The next prime is 2729542339. The reversal of 2729542331 is 1332459272.

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 2729542331 - 2²² = 2725348027 is a prime.

It is a super-2 number, since 2×2729542331² = 14900802673441827122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2729542339) 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, 10417970 + ... + 10418231.

It is an arithmetic number, because the mean of its divisors is an integer number (687594666).

Almost surely, 2^2729542331 is an apocalyptic number.

2729542331 is a deficient number, since it is larger than the sum of its proper divisors (20836333).

2729542331 is a wasteful number, since it uses less digits than its factorization.

2729542331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20836332.

The product of its digits is 90720, while the sum is 38.

The square root of 2729542331 is about 52245.0220690929. The cubic root of 2729542331 is about 1397.5368817598.

The spelling of 2729542331 in words is "two billion, seven hundred twenty-nine million, five hundred forty-two thousand, three hundred thirty-one".