234731421 has 6 divisors (see below), whose sum is σ = 339056510. Its totient is φ = 156487608.

The previous prime is 234731401. The next prime is 234731429. The reversal of 234731421 is 124137432.

It is a happy number.

234731421 is a `hidden beast` number, since 2 + 347 + 314 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 169364196 + 65367225 = 13014^2 + 8085^2 .

It is not a de Polignac number, because 234731421 - 2¹⁷ = 234600349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234731429) 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, 13040626 + ... + 13040643.

Almost surely, 2^234731421 is an apocalyptic number.

It is an amenable number.

234731421 is a deficient number, since it is larger than the sum of its proper divisors (104325089).

234731421 is a wasteful number, since it uses less digits than its factorization.

234731421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26081275 (or 26081272 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 234731421 is about 15320.9471312971. The cubic root of 234731421 is about 616.8653970968.

Adding to 234731421 its reverse (124137432), we get a palindrome (358868853).

The spelling of 234731421 in words is "two hundred thirty-four million, seven hundred thirty-one thousand, four hundred twenty-one".