28960031 has 2 divisors, whose sum is σ = 28960032. Its totient is φ = 28960030.

The previous prime is 28960021. The next prime is 28960081. The reversal of 28960031 is 13006982.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28960031 is a prime.

It is a super-2 number, since 2×28960031² = 1677366791041922, 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 = 28959976 and 28960003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28960021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14480015 + 14480016.

It is an arithmetic number, because the mean of its divisors is an integer number (14480016).

Almost surely, 2^28960031 is an apocalyptic number.

28960031 is a deficient number, since it is larger than the sum of its proper divisors (1).

28960031 is an equidigital number, since it uses as much as digits as its factorization.

28960031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 28960031 is about 5381.4524990935. The cubic root of 28960031 is about 307.0904712016.

The spelling of 28960031 in words is "twenty-eight million, nine hundred sixty thousand, thirty-one".