23240023402 has 4 divisors (see below), whose sum is σ = 34860035106. Its totient is φ = 11620011700.

The previous prime is 23240023379. The next prime is 23240023403. The reversal of 23240023402 is 20432004232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 23237648721 + 2374681 = 152439^2 + 1541^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (23240023403) 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 as a sum of consecutive naturals, namely, 5810005849 + ... + 5810005852.

Almost surely, 2^23240023402 is an apocalyptic number.

23240023402 is a deficient number, since it is larger than the sum of its proper divisors (11620011704).

23240023402 is a wasteful number, since it uses less digits than its factorization.

23240023402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11620011703.

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 23240023402 its reverse (20432004232), we get a palindrome (43672027634).

The spelling of 23240023402 in words is "twenty-three billion, two hundred forty million, twenty-three thousand, four hundred two".