31023132032281 has 2 divisors, whose sum is σ = 31023132032282. Its totient is φ = 31023132032280.

The previous prime is 31023132032141. The next prime is 31023132032287. The reversal of 31023132032281 is 18223023132013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25009400883600 + 6013731148681 = 5000940^2 + 2452291^2 .

It is a cyclic number.

It is not a de Polignac number, because 31023132032281 - 2²⁵ = 31023098477849 is a prime.

It is a super-2 number, since 2×31023132032281² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31023132032287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15511566016140 + 15511566016141.

It is an arithmetic number, because the mean of its divisors is an integer number (15511566016141).

Almost surely, 2^{31023132032281} is an apocalyptic number.

It is an amenable number.

31023132032281 is a deficient number, since it is larger than the sum of its proper divisors (1).

31023132032281 is an equidigital number, since it uses as much as digits as its factorization.

31023132032281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

Adding to 31023132032281 its reverse (18223023132013), we get a palindrome (49246155164294).

The spelling of 31023132032281 in words is "thirty-one trillion, twenty-three billion, one hundred thirty-two million, thirty-two thousand, two hundred eighty-one".