23291629 has 2 divisors, whose sum is σ = 23291630. Its totient is φ = 23291628.

The previous prime is 23291603. The next prime is 23291641. The reversal of 23291629 is 92619232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12236004 + 11055625 = 3498^2 + 3325^2 .

It is a cyclic number.

It is not a de Polignac number, because 23291629 - 2⁷ = 23291501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23291594 and 23291603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23291029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11645814 + 11645815.

It is an arithmetic number, because the mean of its divisors is an integer number (11645815).

Almost surely, 2^23291629 is an apocalyptic number.

It is an amenable number.

23291629 is a deficient number, since it is larger than the sum of its proper divisors (1).

23291629 is an equidigital number, since it uses as much as digits as its factorization.

23291629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 34.

The square root of 23291629 is about 4826.1401761656. The cubic root of 23291629 is about 285.5836158074.

The spelling of 23291629 in words is "twenty-three million, two hundred ninety-one thousand, six hundred twenty-nine".