342400531 has 16 divisors (see below), whose sum is σ = 378862848. Its totient is φ = 306856800.

The previous prime is 342400493. The next prime is 342400537. The reversal of 342400531 is 135004243.

It is a cyclic number.

It is not a de Polignac number, because 342400531 - 2¹⁹ = 341876243 is a prime.

It is a super-2 number, since 2×342400531² = 234476247258163922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (342400537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313296 + ... + 314386.

It is an arithmetic number, because the mean of its divisors is an integer number (23678928).

Almost surely, 2^342400531 is an apocalyptic number.

342400531 is a deficient number, since it is larger than the sum of its proper divisors (36462317).

342400531 is a wasteful number, since it uses less digits than its factorization.

342400531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 342400531 is about 18504.0679581545. The cubic root of 342400531 is about 699.5919601532.

Adding to 342400531 its reverse (135004243), we get a palindrome (477404774).

The spelling of 342400531 in words is "three hundred forty-two million, four hundred thousand, five hundred thirty-one".