23151047 has 2 divisors, whose sum is σ = 23151048. Its totient is φ = 23151046.

The previous prime is 23151031. The next prime is 23151061. The reversal of 23151047 is 74015132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23151047 - 2⁴ = 23151031 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23151097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11575523 + 11575524.

It is an arithmetic number, because the mean of its divisors is an integer number (11575524).

Almost surely, 2^23151047 is an apocalyptic number.

23151047 is a deficient number, since it is larger than the sum of its proper divisors (1).

23151047 is an equidigital number, since it uses as much as digits as its factorization.

23151047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 23151047 is about 4811.5534913373. The cubic root of 23151047 is about 285.0078873369.

Adding to 23151047 its reverse (74015132), we get a palindrome (97166179).

The spelling of 23151047 in words is "twenty-three million, one hundred fifty-one thousand, forty-seven".