31144141169 has 2 divisors, whose sum is σ = 31144141170. Its totient is φ = 31144141168.

The previous prime is 31144141079. The next prime is 31144141247. The reversal of 31144141169 is 96114144113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19282099600 + 11862041569 = 138860^2 + 108913^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31144141169 is a prime.

It is a super-2 number, since 2×31144141169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31144141969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15572070584 + 15572070585.

It is an arithmetic number, because the mean of its divisors is an integer number (15572070585).

Almost surely, 2^31144141169 is an apocalyptic number.

It is an amenable number.

31144141169 is a deficient number, since it is larger than the sum of its proper divisors (1).

31144141169 is an equidigital number, since it uses as much as digits as its factorization.

31144141169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 35.

The spelling of 31144141169 in words is "thirty-one billion, one hundred forty-four million, one hundred forty-one thousand, one hundred sixty-nine".