342123531 has 16 divisors (see below), whose sum is σ = 459260448. Its totient is φ = 226540800.

The previous prime is 342123493. The next prime is 342123577. The reversal of 342123531 is 135321243.

It is not a de Polignac number, because 342123531 - 2¹⁴ = 342107147 is a prime.

It is a super-2 number, since 2×342123531² = 234097020927815922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (342123581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 449191 + ... + 449951.

It is an arithmetic number, because the mean of its divisors is an integer number (28703778).

Almost surely, 2^342123531 is an apocalyptic number.

342123531 is a deficient number, since it is larger than the sum of its proper divisors (117136917).

342123531 is a wasteful number, since it uses less digits than its factorization.

342123531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582.

The product of its digits is 2160, while the sum is 24.

The square root of 342123531 is about 18496.5816030963. The cubic root of 342123531 is about 699.4032540071.

Adding to 342123531 its reverse (135321243), we get a palindrome (477444774).

The spelling of 342123531 in words is "three hundred forty-two million, one hundred twenty-three thousand, five hundred thirty-one".