2731392381 has 16 divisors (see below), whose sum is σ = 3669531264. Its totient is φ = 1807126464.

The previous prime is 2731392359. The next prime is 2731392383. The reversal of 2731392381 is 1832931372.

It is not a de Polignac number, because 2731392381 - 2¹⁰ = 2731391357 is a prime.

It is a super-2 number, since 2×2731392381² = 14921008677969698322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2731392383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335151 + ... + 343203.

It is an arithmetic number, because the mean of its divisors is an integer number (229345704).

Almost surely, 2^2731392381 is an apocalyptic number.

It is an amenable number.

2731392381 is a deficient number, since it is larger than the sum of its proper divisors (938138883).

2731392381 is a wasteful number, since it uses less digits than its factorization.

2731392381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8900.

The product of its digits is 54432, while the sum is 39.

The square root of 2731392381 is about 52262.7245845450. The cubic root of 2731392381 is about 1397.8525548497.

The spelling of 2731392381 in words is "two billion, seven hundred thirty-one million, three hundred ninety-two thousand, three hundred eighty-one".