10721831 has 2 divisors, whose sum is σ = 10721832. Its totient is φ = 10721830.

The previous prime is 10721827. The next prime is 10721861. The reversal of 10721831 is 13812701.

It is a happy number.

10721831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10721831 - 2² = 10721827 is a prime.

It is a super-2 number, since 2×10721831² = 229915319985122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 10721797 and 10721806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10721861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5360915 + 5360916.

It is an arithmetic number, because the mean of its divisors is an integer number (5360916).

Almost surely, 2^10721831 is an apocalyptic number.

10721831 is a deficient number, since it is larger than the sum of its proper divisors (1).

10721831 is an equidigital number, since it uses as much as digits as its factorization.

10721831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 10721831 is about 3274.4207121260. The cubic root of 10721831 is about 220.5073072412.

The spelling of 10721831 in words is "ten million, seven hundred twenty-one thousand, eight hundred thirty-one".