23342920781 has 4 divisors (see below), whose sum is σ = 23343285600. Its totient is φ = 23342555964.

The previous prime is 23342920739. The next prime is 23342920793. The reversal of 23342920781 is 18702924332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23342920781 - 2⁶ = 23342920717 is a prime.

It is a super-2 number, since 2×23342920781² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23342920721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58271 + ... + 223788.

It is an arithmetic number, because the mean of its divisors is an integer number (5835821400).

Almost surely, 2^23342920781 is an apocalyptic number.

It is an amenable number.

23342920781 is a deficient number, since it is larger than the sum of its proper divisors (364819).

23342920781 is an equidigital number, since it uses as much as digits as its factorization.

23342920781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364818.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 23342920781 in words is "twenty-three billion, three hundred forty-two million, nine hundred twenty thousand, seven hundred eighty-one".