2307721132 has 12 divisors (see below), whose sum is σ = 4041080680. Its totient is φ = 1153126656.

The previous prime is 2307721099. The next prime is 2307721147. The reversal of 2307721132 is 2311277032.

It is a happy number.

It is a super-2 number, since 2×2307721132² = 10651153646158722848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2307721132.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176373 + ... + 189004.

Almost surely, 2^2307721132 is an apocalyptic number.

It is an amenable number.

2307721132 is a deficient number, since it is larger than the sum of its proper divisors (1733359548).

2307721132 is a wasteful number, since it uses less digits than its factorization.

2307721132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366960 (or 366958 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 2307721132 is about 48038.7461534957. The cubic root of 2307721132 is about 1321.4815649698.

Adding to 2307721132 its reverse (2311277032), we get a palindrome (4618998164).

The spelling of 2307721132 in words is "two billion, three hundred seven million, seven hundred twenty-one thousand, one hundred thirty-two".