342000031 has 2 divisors, whose sum is σ = 342000032. Its totient is φ = 342000030.

The previous prime is 342000023. The next prime is 342000047. The reversal of 342000031 is 130000243.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 342000031 - 2³ = 342000023 is a prime.

It is a super-2 number, since 2×342000031² = 233928042408001922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 341999975 and 342000020.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342000011) 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 as a sum of consecutive naturals, namely, 171000015 + 171000016.

It is an arithmetic number, because the mean of its divisors is an integer number (171000016).

Almost surely, 2^342000031 is an apocalyptic number.

342000031 is a deficient number, since it is larger than the sum of its proper divisors (1).

342000031 is an equidigital number, since it uses as much as digits as its factorization.

342000031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 342000031 is about 18493.2428470509. The cubic root of 342000031 is about 699.3190868476.

Adding to 342000031 its reverse (130000243), we get a palindrome (472000274).

The spelling of 342000031 in words is "three hundred forty-two million, thirty-one", and thus it is an aban number.