31132134251 has 2 divisors, whose sum is σ = 31132134252. Its totient is φ = 31132134250.

The previous prime is 31132134217. The next prime is 31132134301. The reversal of 31132134251 is 15243123113.

It is a weak prime.

It is an emirp because it is prime and its reverse (15243123113) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31132134251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31132134251.

It is not a weakly prime, because it can be changed into another prime (31132134211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15566067125 + 15566067126.

It is an arithmetic number, because the mean of its divisors is an integer number (15566067126).

Almost surely, 2^31132134251 is an apocalyptic number.

31132134251 is a deficient number, since it is larger than the sum of its proper divisors (1).

31132134251 is an equidigital number, since it uses as much as digits as its factorization.

31132134251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

Adding to 31132134251 its reverse (15243123113), we get a palindrome (46375257364).

The spelling of 31132134251 in words is "thirty-one billion, one hundred thirty-two million, one hundred thirty-four thousand, two hundred fifty-one".