31262942197 has 2 divisors, whose sum is σ = 31262942198. Its totient is φ = 31262942196.

The previous prime is 31262942141. The next prime is 31262942237. The reversal of 31262942197 is 79124926213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18450060561 + 12812881636 = 135831^2 + 113194^2 .

It is a cyclic number.

It is not a de Polignac number, because 31262942197 - 2⁷ = 31262942069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31262952197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15631471098 + 15631471099.

It is an arithmetic number, because the mean of its divisors is an integer number (15631471099).

Almost surely, 2^31262942197 is an apocalyptic number.

It is an amenable number.

31262942197 is a deficient number, since it is larger than the sum of its proper divisors (1).

31262942197 is an equidigital number, since it uses as much as digits as its factorization.

31262942197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The spelling of 31262942197 in words is "thirty-one billion, two hundred sixty-two million, nine hundred forty-two thousand, one hundred ninety-seven".