28331240023 has 2 divisors, whose sum is σ = 28331240024. Its totient is φ = 28331240022.

The previous prime is 28331240017. The next prime is 28331240051. The reversal of 28331240023 is 32004213382.

It is an a-pointer prime, because the next prime (28331240051) can be obtained adding 28331240023 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28331240023 - 2¹⁷ = 28331108951 is a prime.

It is a super-2 number, since 2×28331240023² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28331239973 and 28331240000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28331240053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14165620011 + 14165620012.

It is an arithmetic number, because the mean of its divisors is an integer number (14165620012).

Almost surely, 2^28331240023 is an apocalyptic number.

28331240023 is a deficient number, since it is larger than the sum of its proper divisors (1).

28331240023 is an equidigital number, since it uses as much as digits as its factorization.

28331240023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 28.

The spelling of 28331240023 in words is "twenty-eight billion, three hundred thirty-one million, two hundred forty thousand, twenty-three".