1023211231331 has 2 divisors, whose sum is σ = 1023211231332. Its totient is φ = 1023211231330.

The previous prime is 1023211231307. The next prime is 1023211231381. The reversal of 1023211231331 is 1331321123201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1023211231331 - 2²⁶ = 1023144122467 is a prime.

It is a super-2 number, since 2×1023211231331² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1023211231297 and 1023211231306.

It is not a weakly prime, because it can be changed into another prime (1023211231381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511605615665 + 511605615666.

It is an arithmetic number, because the mean of its divisors is an integer number (511605615666).

Almost surely, 2^{1023211231331} is an apocalyptic number.

1023211231331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023211231331 is an equidigital number, since it uses as much as digits as its factorization.

1023211231331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1023211231331 its reverse (1331321123201), we get a palindrome (2354532354532).

The spelling of 1023211231331 in words is "one trillion, twenty-three billion, two hundred eleven million, two hundred thirty-one thousand, three hundred thirty-one".