3720002731 has 8 divisors (see below), whose sum is σ = 3735439344. Its totient is φ = 3704598240.

The previous prime is 3720002717. The next prime is 3720002771. The reversal of 3720002731 is 1372000273.

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

It is a cyclic number.

It is not a de Polignac number, because 3720002731 - 2¹⁵ = 3719969963 is a prime.

It is a super-2 number, since 2×3720002731² = 27676840637294916722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3720002696 and 3720002705.

It is not an unprimeable number, because it can be changed into a prime (3720002771) 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, 239601 + ... + 254653.

It is an arithmetic number, because the mean of its divisors is an integer number (466929918).

Almost surely, 2^3720002731 is an apocalyptic number.

3720002731 is a deficient number, since it is larger than the sum of its proper divisors (15436613).

3720002731 is a wasteful number, since it uses less digits than its factorization.

3720002731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16061.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 3720002731 is about 60991.8251161580. The cubic root of 3720002731 is about 1549.4625581730.

It can be divided in two parts, 37 and 20002731, that multiplied together give a palindrome (740101047).

The spelling of 3720002731 in words is "three billion, seven hundred twenty million, two thousand, seven hundred thirty-one".