31401113302987 has 2 divisors, whose sum is σ = 31401113302988. Its totient is φ = 31401113302986.

The previous prime is 31401113302973. The next prime is 31401113303051. The reversal of 31401113302987 is 78920331110413.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31401113302987 is a prime.

It is not a weakly prime, because it can be changed into another prime (31401113302927) 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, 15700556651493 + 15700556651494.

It is an arithmetic number, because the mean of its divisors is an integer number (15700556651494).

Almost surely, 2^{31401113302987} is an apocalyptic number.

31401113302987 is a deficient number, since it is larger than the sum of its proper divisors (1).

31401113302987 is an equidigital number, since it uses as much as digits as its factorization.

31401113302987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 31401113302987 in words is "thirty-one trillion, four hundred one billion, one hundred thirteen million, three hundred two thousand, nine hundred eighty-seven".