1223000031331 has 16 divisors (see below), whose sum is σ = 1319498722080. Its totient is φ = 1126848084480.

The previous prime is 1223000031329. The next prime is 1223000031347. The reversal of 1223000031331 is 1331300003221.

It is a cyclic number.

It is not a de Polignac number, because 1223000031331 - 2¹ = 1223000031329 is a prime.

It is a super-2 number, since 2×1223000031331² (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 = 1223000031299 and 1223000031308.

It is not an unprimeable number, because it can be changed into a prime (1223000031731) 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 in 15 ways as a sum of consecutive naturals, for example, 47314971 + ... + 47340811.

It is an arithmetic number, because the mean of its divisors is an integer number (82468670130).

Almost surely, 2^{1223000031331} is an apocalyptic number.

1223000031331 is a deficient number, since it is larger than the sum of its proper divisors (96498690749).

1223000031331 is a wasteful number, since it uses less digits than its factorization.

1223000031331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32406.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 1223000031331 its reverse (1331300003221), we get a palindrome (2554300034552).

The spelling of 1223000031331 in words is "one trillion, two hundred twenty-three billion, thirty-one thousand, three hundred thirty-one".