31012148369197 has 2 divisors, whose sum is σ = 31012148369198. Its totient is φ = 31012148369196.

The previous prime is 31012148369159. The next prime is 31012148369221. The reversal of 31012148369197 is 79196384121013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25090221252196 + 5921927117001 = 5009014^2 + 2433501^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31012148369197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31012148369107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15506074184598 + 15506074184599.

It is an arithmetic number, because the mean of its divisors is an integer number (15506074184599).

Almost surely, 2^{31012148369197} is an apocalyptic number.

It is an amenable number.

31012148369197 is a deficient number, since it is larger than the sum of its proper divisors (1).

31012148369197 is an equidigital number, since it uses as much as digits as its factorization.

31012148369197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The spelling of 31012148369197 in words is "thirty-one trillion, twelve billion, one hundred forty-eight million, three hundred sixty-nine thousand, one hundred ninety-seven".