23403040002 has 24 divisors (see below), whose sum is σ = 50716627884. Its totient is φ = 7799468544.

The previous prime is 23403039983. The next prime is 23403040007. The reversal of 23403040002 is 20004030432.

23403040002 is a `hidden beast` number, since 234 + 0 + 30 + 400 + 0 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 22782581721 + 620458281 = 150939^2 + 24909^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (23403040007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33403 + ... + 218910.

Almost surely, 2^23403040002 is an apocalyptic number.

23403040002 is an abundant number, since it is smaller than the sum of its proper divisors (27313587882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23403040002 is a wasteful number, since it uses less digits than its factorization.

23403040002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257474 (or 257471 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

Adding to 23403040002 its reverse (20004030432), we get a palindrome (43407070434).

The spelling of 23403040002 in words is "twenty-three billion, four hundred three million, forty thousand, two".