3720131 has 4 divisors (see below), whose sum is σ = 3724032. Its totient is φ = 3716232.

The previous prime is 3720121. The next prime is 3720137. The reversal of 3720131 is 1310273.

3720131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1310273 = 101 ⋅12973.

It is a cyclic number.

It is not a de Polignac number, because 3720131 - 2¹⁴ = 3703747 is a prime.

It is a super-2 number, since 2×3720131² = 27678749314322, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (3720137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545 + ... + 2781.

It is an arithmetic number, because the mean of its divisors is an integer number (931008).

Almost surely, 2^3720131 is an apocalyptic number.

3720131 is a deficient number, since it is larger than the sum of its proper divisors (3901).

3720131 is a wasteful number, since it uses less digits than its factorization.

3720131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3900.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 3720131 is about 1928.7641120676. The cubic root of 3720131 is about 154.9480366917.

The spelling of 3720131 in words is "three million, seven hundred twenty thousand, one hundred thirty-one".