31828873 has 2 divisors, whose sum is σ = 31828874. Its totient is φ = 31828872.

The previous prime is 31828871. The next prime is 31828877. The reversal of 31828873 is 37882813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16867449 + 14961424 = 4107^2 + 3868^2 .

It is a cyclic number.

It is not a de Polignac number, because 31828873 - 2¹ = 31828871 is a prime.

Together with 31828871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (31828871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15914436 + 15914437.

It is an arithmetic number, because the mean of its divisors is an integer number (15914437).

Almost surely, 2^31828873 is an apocalyptic number.

It is an amenable number.

31828873 is a deficient number, since it is larger than the sum of its proper divisors (1).

31828873 is an equidigital number, since it uses as much as digits as its factorization.

31828873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 40.

The square root of 31828873 is about 5641.7083405649. The cubic root of 31828873 is about 316.9132669468.

The spelling of 31828873 in words is "thirty-one million, eight hundred twenty-eight thousand, eight hundred seventy-three".