234545431 has 4 divisors (see below), whose sum is σ = 236098864. Its totient is φ = 232992000.

The previous prime is 234545429. The next prime is 234545449. The reversal of 234545431 is 134545432.

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 234545431 - 2¹ = 234545429 is a prime.

It is a super-2 number, since 2×234545431² = 110023118405951522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 234545393 and 234545402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234545401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776490 + ... + 776791.

It is an arithmetic number, because the mean of its divisors is an integer number (59024716).

Almost surely, 2^234545431 is an apocalyptic number.

234545431 is a deficient number, since it is larger than the sum of its proper divisors (1553433).

234545431 is a wasteful number, since it uses less digits than its factorization.

234545431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553432.

The product of its digits is 28800, while the sum is 31.

The square root of 234545431 is about 15314.8761340077. The cubic root of 234545431 is about 616.7024291247.

Subtracting from 234545431 its reverse (134545432), we obtain a palindrome (99999999).

It can be divided in two parts, 23 and 4545431, that added together give a palindrome (4545454).

The spelling of 234545431 in words is "two hundred thirty-four million, five hundred forty-five thousand, four hundred thirty-one".