31143234097 has 2 divisors, whose sum is σ = 31143234098. Its totient is φ = 31143234096.

The previous prime is 31143234079. The next prime is 31143234139. The reversal of 31143234097 is 79043234113.

Together with previous prime (31143234079) 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., 23359759921 + 7783474176 = 152839^2 + 88224^2 .

It is an emirp because it is prime and its reverse (79043234113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31143234097 - 2³¹ = 28995750449 is a prime.

It is not a weakly prime, because it can be changed into another prime (31143234037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15571617048 + 15571617049.

It is an arithmetic number, because the mean of its divisors is an integer number (15571617049).

Almost surely, 2^31143234097 is an apocalyptic number.

It is an amenable number.

31143234097 is a deficient number, since it is larger than the sum of its proper divisors (1).

31143234097 is an equidigital number, since it uses as much as digits as its factorization.

31143234097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 37.

The spelling of 31143234097 in words is "thirty-one billion, one hundred forty-three million, two hundred thirty-four thousand, ninety-seven".