2731991372 has 24 divisors (see below), whose sum is σ = 5326594560. Its totient is φ = 1215391760.

The previous prime is 2731991299. The next prime is 2731991377.

2731991372 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (2731991377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 658472 + ... + 662607.

It is an arithmetic number, because the mean of its divisors is an integer number (221941440).

Almost surely, 2^2731991372 is an apocalyptic number.

2731991372 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2731991372 is a deficient number, since it is larger than the sum of its proper divisors (2594603188).

2731991372 is a wasteful number, since it uses less digits than its factorization.

2731991372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321141 (or 1321139 counting only the distinct ones).

The product of its digits is 142884, while the sum is 44.

The square root of 2731991372 is about 52268.4548461115. The cubic root of 2731991372 is about 1397.9547298315.

The spelling of 2731991372 in words is "two billion, seven hundred thirty-one million, nine hundred ninety-one thousand, three hundred seventy-two".