234402042431 has 4 divisors (see below), whose sum is σ = 236088388200. Its totient is φ = 232715696664.

The previous prime is 234402042409. The next prime is 234402042437. The reversal of 234402042431 is 134240204432.

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

It is a cyclic number.

It is not a de Polignac number, because 234402042431 - 2²² = 234397848127 is a prime.

It is a super-2 number, since 2×234402042431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 234402042394 and 234402042403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234402042437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 843172676 + ... + 843172953.

It is an arithmetic number, because the mean of its divisors is an integer number (59022097050).

Almost surely, 2^234402042431 is an apocalyptic number.

234402042431 is a deficient number, since it is larger than the sum of its proper divisors (1686345769).

234402042431 is a wasteful number, since it uses less digits than its factorization.

234402042431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686345768.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 234402042431 its reverse (134240204432), we get a palindrome (368642246863).

The spelling of 234402042431 in words is "two hundred thirty-four billion, four hundred two million, forty-two thousand, four hundred thirty-one".