31421111044313 has 2 divisors, whose sum is σ = 31421111044314. Its totient is φ = 31421111044312.

The previous prime is 31421111044243. The next prime is 31421111044327. The reversal of 31421111044313 is 31344011112413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19844601553984 + 11576509490329 = 4454728^2 + 3402427^2 .

It is a cyclic number.

It is not a de Polignac number, because 31421111044313 - 2¹⁸ = 31421110782169 is a prime.

It is not a weakly prime, because it can be changed into another prime (31421111044613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15710555522156 + 15710555522157.

It is an arithmetic number, because the mean of its divisors is an integer number (15710555522157).

Almost surely, 2^{31421111044313} is an apocalyptic number.

It is an amenable number.

31421111044313 is a deficient number, since it is larger than the sum of its proper divisors (1).

31421111044313 is an equidigital number, since it uses as much as digits as its factorization.

31421111044313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 31421111044313 its reverse (31344011112413), we get a palindrome (62765122156726).

The spelling of 31421111044313 in words is "thirty-one trillion, four hundred twenty-one billion, one hundred eleven million, forty-four thousand, three hundred thirteen".