31234343197 has 2 divisors, whose sum is σ = 31234343198. Its totient is φ = 31234343196.

The previous prime is 31234343159. The next prime is 31234343201. The reversal of 31234343197 is 79134343213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31161428676 + 72914521 = 176526^2 + 8539^2 .

It is a cyclic number.

It is not a de Polignac number, because 31234343197 - 2²³ = 31225954589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31234343897) 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, 15617171598 + 15617171599.

It is an arithmetic number, because the mean of its divisors is an integer number (15617171599).

Almost surely, 2^31234343197 is an apocalyptic number.

It is an amenable number.

31234343197 is a deficient number, since it is larger than the sum of its proper divisors (1).

31234343197 is an equidigital number, since it uses as much as digits as its factorization.

31234343197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 40.

The spelling of 31234343197 in words is "thirty-one billion, two hundred thirty-four million, three hundred forty-three thousand, one hundred ninety-seven".