234243531 has 6 divisors (see below), whose sum is σ = 338351780. Its totient is φ = 156162348.

The previous prime is 234243509. The next prime is 234243539. The reversal of 234243531 is 135342432.

It is not a de Polignac number, because 234243531 - 2²² = 230049227 is a prime.

It is a super-2 number, since 2×234243531² = 109740063630695922, 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 = 234243495 and 234243504.

It is not an unprimeable number, because it can be changed into a prime (234243539) 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 5 ways as a sum of consecutive naturals, for example, 13013521 + ... + 13013538.

Almost surely, 2^234243531 is an apocalyptic number.

234243531 is a deficient number, since it is larger than the sum of its proper divisors (104108249).

234243531 is a wasteful number, since it uses less digits than its factorization.

234243531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26027065 (or 26027062 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 234243531 is about 15305.0165305366. The cubic root of 234243531 is about 616.4377150882.

Adding to 234243531 its reverse (135342432), we get a palindrome (369585963).

The spelling of 234243531 in words is "two hundred thirty-four million, two hundred forty-three thousand, five hundred thirty-one".