40304430234 has 12 divisors (see below), whose sum is σ = 87326265546. Its totient is φ = 13434810072.

The previous prime is 40304430163. The next prime is 40304430239. The reversal of 40304430234 is 43203440304.

It can be written as a sum of positive squares in only one way, i.e., 36862848009 + 3441582225 = 191997^2 + 58665^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40304430198 and 40304430207.

It is not an unprimeable number, because it can be changed into a prime (40304430239) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1119567489 + ... + 1119567524.

Almost surely, 2^40304430234 is an apocalyptic number.

40304430234 is an abundant number, since it is smaller than the sum of its proper divisors (47021835312).

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

40304430234 is a wasteful number, since it uses less digits than its factorization.

40304430234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239135021 (or 2239135018 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 40304430234 its reverse (43203440304), we get a palindrome (83507870538).

The spelling of 40304430234 in words is "forty billion, three hundred four million, four hundred thirty thousand, two hundred thirty-four".