3721540231 has 4 divisors (see below), whose sum is σ = 3883346352. Its totient is φ = 3559734112.

The previous prime is 3721540201. The next prime is 3721540243. The reversal of 3721540231 is 1320451273.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1320451273 = 863 ⋅1530071.

It is a cyclic number.

It is not a de Polignac number, because 3721540231 - 2¹⁵ = 3721507463 is a prime.

It is a super-2 number, since 2×3721540231² = 27699723381903066722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3721540231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3721540201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80903026 + ... + 80903071.

It is an arithmetic number, because the mean of its divisors is an integer number (970836588).

Almost surely, 2^3721540231 is an apocalyptic number.

3721540231 is a deficient number, since it is larger than the sum of its proper divisors (161806121).

3721540231 is a wasteful number, since it uses less digits than its factorization.

3721540231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161806120.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 3721540231 is about 61004.4279622389. The cubic root of 3721540231 is about 1549.6759962378.

The spelling of 3721540231 in words is "three billion, seven hundred twenty-one million, five hundred forty thousand, two hundred thirty-one".