142331911 has 2 divisors, whose sum is σ = 142331912. Its totient is φ = 142331910.

The previous prime is 142331899. The next prime is 142331921. The reversal of 142331911 is 119133241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142331911 - 2⁵ = 142331879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142331921) 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, 71165955 + 71165956.

It is an arithmetic number, because the mean of its divisors is an integer number (71165956).

Almost surely, 2^142331911 is an apocalyptic number.

142331911 is a deficient number, since it is larger than the sum of its proper divisors (1).

142331911 is an equidigital number, since it uses as much as digits as its factorization.

142331911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 25.

The square root of 142331911 is about 11930.2938354426. The cubic root of 142331911 is about 522.1165104990.

The spelling of 142331911 in words is "one hundred forty-two million, three hundred thirty-one thousand, nine hundred eleven".