1023212331031 has 4 divisors (see below), whose sum is σ = 1116231633864. Its totient is φ = 930193028200.

The previous prime is 1023212331007. The next prime is 1023212331047. The reversal of 1023212331031 is 1301332123201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1023212331031 is a prime.

It is a super-2 number, since 2×1023212331031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1023212330993 and 1023212331011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023212331061) 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 in 3 ways as a sum of consecutive naturals, for example, 46509651400 + ... + 46509651421.

It is an arithmetic number, because the mean of its divisors is an integer number (279057908466).

Almost surely, 2^{1023212331031} is an apocalyptic number.

1023212331031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1023212331031 is a deficient number, since it is larger than the sum of its proper divisors (93019302833).

1023212331031 is an equidigital number, since it uses as much as digits as its factorization.

1023212331031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93019302832.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1023212331031 its reverse (1301332123201), we get a palindrome (2324544454232).

The spelling of 1023212331031 in words is "one trillion, twenty-three billion, two hundred twelve million, three hundred thirty-one thousand, thirty-one".