31321020301969 has 2 divisors, whose sum is σ = 31321020301970. Its totient is φ = 31321020301968.

The previous prime is 31321020301939. The next prime is 31321020301973. The reversal of 31321020301969 is 96910302012313.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24811954945600 + 6509065356369 = 4981160^2 + 2551287^2 .

It is a cyclic number.

It is not a de Polignac number, because 31321020301969 - 2¹⁹ = 31321019777681 is a prime.

It is a super-2 number, since 2×31321020301969² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31321020301939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15660510150984 + 15660510150985.

It is an arithmetic number, because the mean of its divisors is an integer number (15660510150985).

Almost surely, 2^{31321020301969} is an apocalyptic number.

It is an amenable number.

31321020301969 is a deficient number, since it is larger than the sum of its proper divisors (1).

31321020301969 is an equidigital number, since it uses as much as digits as its factorization.

31321020301969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 40.

The spelling of 31321020301969 in words is "thirty-one trillion, three hundred twenty-one billion, twenty million, three hundred one thousand, nine hundred sixty-nine".