31456214893 has 2 divisors, whose sum is σ = 31456214894. Its totient is φ = 31456214892.

The previous prime is 31456214863. The next prime is 31456214939. The reversal of 31456214893 is 39841265413.

It is a happy number.

It is an a-pointer prime, because the next prime (31456214939) can be obtained adding 31456214893 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18839758564 + 12616456329 = 137258^2 + 112323^2 .

It is a cyclic number.

It is not a de Polignac number, because 31456214893 - 2²¹ = 31454117741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31456214863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15728107446 + 15728107447.

It is an arithmetic number, because the mean of its divisors is an integer number (15728107447).

Almost surely, 2^31456214893 is an apocalyptic number.

It is an amenable number.

31456214893 is a deficient number, since it is larger than the sum of its proper divisors (1).

31456214893 is an equidigital number, since it uses as much as digits as its factorization.

31456214893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 46.

The spelling of 31456214893 in words is "thirty-one billion, four hundred fifty-six million, two hundred fourteen thousand, eight hundred ninety-three".