142213031 has 2 divisors, whose sum is σ = 142213032. Its totient is φ = 142213030.

The previous prime is 142212991. The next prime is 142213033. The reversal of 142213031 is 130312241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142213031 - 2¹⁴ = 142196647 is a prime.

It is a super-2 number, since 2×142213031² = 40449092372413922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 142213033, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142213033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71106515 + 71106516.

It is an arithmetic number, because the mean of its divisors is an integer number (71106516).

Almost surely, 2^142213031 is an apocalyptic number.

142213031 is a deficient number, since it is larger than the sum of its proper divisors (1).

142213031 is an equidigital number, since it uses as much as digits as its factorization.

142213031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 142213031 is about 11925.3105200661. The cubic root of 142213031 is about 521.9711074078.

Adding to 142213031 its reverse (130312241), we get a palindrome (272525272).

The spelling of 142213031 in words is "one hundred forty-two million, two hundred thirteen thousand, thirty-one".