11951923 has 2 divisors, whose sum is σ = 11951924. Its totient is φ = 11951922.

The previous prime is 11951909. The next prime is 11951963. The reversal of 11951923 is 32915911.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11951923 - 2⁹ = 11951411 is a prime.

It is not a weakly prime, because it can be changed into another prime (11951963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5975961 + 5975962.

It is an arithmetic number, because the mean of its divisors is an integer number (5975962).

Almost surely, 2^11951923 is an apocalyptic number.

11951923 is a deficient number, since it is larger than the sum of its proper divisors (1).

11951923 is an equidigital number, since it uses as much as digits as its factorization.

11951923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2430, while the sum is 31.

The square root of 11951923 is about 3457.1553335076. The cubic root of 11951923 is about 228.6366924684.

The spelling of 11951923 in words is "eleven million, nine hundred fifty-one thousand, nine hundred twenty-three".