342111431 has 2 divisors, whose sum is σ = 342111432. Its totient is φ = 342111430.

The previous prime is 342111403. The next prime is 342111439. The reversal of 342111431 is 134111243.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-342111431 is a prime.

It is a super-2 number, since 2×342111431² = 234080462441735522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342111439) 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, 171055715 + 171055716.

It is an arithmetic number, because the mean of its divisors is an integer number (171055716).

Almost surely, 2^342111431 is an apocalyptic number.

342111431 is a deficient number, since it is larger than the sum of its proper divisors (1).

342111431 is an equidigital number, since it uses as much as digits as its factorization.

342111431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 20.

The square root of 342111431 is about 18496.2545127385. The cubic root of 342111431 is about 699.3950085651.

Adding to 342111431 its reverse (134111243), we get a palindrome (476222674).

The spelling of 342111431 in words is "three hundred forty-two million, one hundred eleven thousand, four hundred thirty-one".