2731521273 has 8 divisors (see below), whose sum is σ = 3922184448. Its totient is φ = 1680936144.

The previous prime is 2731521269. The next prime is 2731521283. The reversal of 2731521273 is 3721251372.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2731521273 - 2² = 2731521269 is a prime.

It is a super-2 number, since 2×2731521273² = 14922416929703081058, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2731521253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35019465 + ... + 35019542.

It is an arithmetic number, because the mean of its divisors is an integer number (490273056).

Almost surely, 2^2731521273 is an apocalyptic number.

It is an amenable number.

2731521273 is a deficient number, since it is larger than the sum of its proper divisors (1190663175).

2731521273 is a wasteful number, since it uses less digits than its factorization.

2731521273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70039023.

The product of its digits is 17640, while the sum is 33.

The square root of 2731521273 is about 52263.9576859617. The cubic root of 2731521273 is about 1397.8745423140.

The spelling of 2731521273 in words is "two billion, seven hundred thirty-one million, five hundred twenty-one thousand, two hundred seventy-three".