1031031321121 has 2 divisors, whose sum is σ = 1031031321122. Its totient is φ = 1031031321120.

The previous prime is 1031031321107. The next prime is 1031031321137. The reversal of 1031031321121 is 1211231301301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 987958469521 + 43072851600 = 993961^2 + 207540^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031031321121 - 2¹³ = 1031031312929 is a prime.

It is not a weakly prime, because it can be changed into another prime (1031031321101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515515660560 + 515515660561.

It is an arithmetic number, because the mean of its divisors is an integer number (515515660561).

Almost surely, 2^{1031031321121} is an apocalyptic number.

It is an amenable number.

1031031321121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031031321121 is an equidigital number, since it uses as much as digits as its factorization.

1031031321121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1031031321121 its reverse (1211231301301), we get a palindrome (2242262622422).

The spelling of 1031031321121 in words is "one trillion, thirty-one billion, thirty-one million, three hundred twenty-one thousand, one hundred twenty-one".