31312421417 has 2 divisors, whose sum is σ = 31312421418. Its totient is φ = 31312421416.

The previous prime is 31312421411. The next prime is 31312421423. The reversal of 31312421417 is 71412421313.

It is a balanced prime because it is at equal distance from previous prime (31312421411) and next prime (31312421423).

It can be written as a sum of positive squares in only one way, i.e., 23083028761 + 8229392656 = 151931^2 + 90716^2 .

It is a cyclic number.

It is not a de Polignac number, because 31312421417 - 2⁶ = 31312421353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31312421417.

It is not a weakly prime, because it can be changed into another prime (31312421411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15656210708 + 15656210709.

It is an arithmetic number, because the mean of its divisors is an integer number (15656210709).

Almost surely, 2^31312421417 is an apocalyptic number.

It is an amenable number.

31312421417 is a deficient number, since it is larger than the sum of its proper divisors (1).

31312421417 is an equidigital number, since it uses as much as digits as its factorization.

31312421417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The spelling of 31312421417 in words is "thirty-one billion, three hundred twelve million, four hundred twenty-one thousand, four hundred seventeen".