4720831 has 4 divisors (see below), whose sum is σ = 4727464. Its totient is φ = 4714200.

The previous prime is 4720817. The next prime is 4720843. The reversal of 4720831 is 1380274.

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

It is a cyclic number.

It is not a de Polignac number, because 4720831 - 2¹⁷ = 4589759 is a prime.

It is a super-2 number, since 2×4720831² = 44572490661122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4720796 and 4720805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4720811) 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, 2100 + ... + 3721.

It is an arithmetic number, because the mean of its divisors is an integer number (1181866).

Almost surely, 2^4720831 is an apocalyptic number.

4720831 is a deficient number, since it is larger than the sum of its proper divisors (6633).

4720831 is an equidigital number, since it uses as much as digits as its factorization.

4720831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6632.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 4720831 is about 2172.7473391998. The cubic root of 4720831 is about 167.7539742588.

The spelling of 4720831 in words is "four million, seven hundred twenty thousand, eight hundred thirty-one".