20142131197 has 2 divisors, whose sum is σ = 20142131198. Its totient is φ = 20142131196.

The previous prime is 20142131179. The next prime is 20142131231. The reversal of 20142131197 is 79113124102.

It is a happy number.

Together with previous prime (20142131179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14710293796 + 5431837401 = 121286^2 + 73701^2 .

It is a cyclic number.

It is not a de Polignac number, because 20142131197 - 2³¹ = 17994647549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20142131167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10071065598 + 10071065599.

It is an arithmetic number, because the mean of its divisors is an integer number (10071065599).

Almost surely, 2^20142131197 is an apocalyptic number.

It is an amenable number.

20142131197 is a deficient number, since it is larger than the sum of its proper divisors (1).

20142131197 is an equidigital number, since it uses as much as digits as its factorization.

20142131197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

Adding to 20142131197 its reverse (79113124102), we get a palindrome (99255255299).

The spelling of 20142131197 in words is "twenty billion, one hundred forty-two million, one hundred thirty-one thousand, one hundred ninety-seven".