1323120031 has 2 divisors, whose sum is σ = 1323120032. Its totient is φ = 1323120030.

The previous prime is 1323120023. The next prime is 1323120049. The reversal of 1323120031 is 1300213231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1323120031 - 2³ = 1323120023 is a prime.

It is a super-2 number, since 2×1323120031² = 3501293232866881922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1323119987 and 1323120014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323123031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661560015 + 661560016.

It is an arithmetic number, because the mean of its divisors is an integer number (661560016).

Almost surely, 2^1323120031 is an apocalyptic number.

1323120031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323120031 is an equidigital number, since it uses as much as digits as its factorization.

1323120031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1323120031 is about 36374.7169198607. The cubic root of 1323120031 is about 1097.8249115588.

Adding to 1323120031 its reverse (1300213231), we get a palindrome (2623333262).

The spelling of 1323120031 in words is "one billion, three hundred twenty-three million, one hundred twenty thousand, thirty-one".