23991093381 has 8 divisors (see below), whose sum is σ = 32060334240. Its totient is φ = 15957957392.

The previous prime is 23991093331. The next prime is 23991093389. The reversal of 23991093381 is 18339019932.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23991093381 - 2⁶ = 23991093317 is a prime.

It is a super-2 number, since 2×23991093381² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23991093381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23991093389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9024666 + ... + 9027323.

It is an arithmetic number, because the mean of its divisors is an integer number (4007541780).

Almost surely, 2^23991093381 is an apocalyptic number.

It is an amenable number.

23991093381 is a deficient number, since it is larger than the sum of its proper divisors (8069240859).

23991093381 is a wasteful number, since it uses less digits than its factorization.

23991093381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18052435.

The product of its (nonzero) digits is 314928, while the sum is 48.

The spelling of 23991093381 in words is "twenty-three billion, nine hundred ninety-one million, ninety-three thousand, three hundred eighty-one".