4721375231 has 4 divisors (see below), whose sum is σ = 4801398600. Its totient is φ = 4641351864.

The previous prime is 4721375171. The next prime is 4721375233. The reversal of 4721375231 is 1325731274.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4721375231 is a prime.

It is a super-2 number, since 2×4721375231² = 44582768143800606722, 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 = 4721375191 and 4721375200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4721375233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40011596 + ... + 40011713.

It is an arithmetic number, because the mean of its divisors is an integer number (1200349650).

Almost surely, 2^4721375231 is an apocalyptic number.

4721375231 is a deficient number, since it is larger than the sum of its proper divisors (80023369).

4721375231 is an equidigital number, since it uses as much as digits as its factorization.

4721375231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80023368.

The product of its digits is 35280, while the sum is 35.

The square root of 4721375231 is about 68712.2640508956. The cubic root of 4721375231 is about 1677.6042039830.

The spelling of 4721375231 in words is "four billion, seven hundred twenty-one million, three hundred seventy-five thousand, two hundred thirty-one".