31023121130033 has 2 divisors, whose sum is σ = 31023121130034. Its totient is φ = 31023121130032.

The previous prime is 31023121130011. The next prime is 31023121130077. The reversal of 31023121130033 is 33003112132013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17024800236544 + 13998320893489 = 4126112^2 + 3741433^2 .

It is a cyclic number.

It is not a de Polignac number, because 31023121130033 - 2⁴⁰ = 29923609502257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31023121129990 and 31023121130008.

It is not a weakly prime, because it can be changed into another prime (31023121138033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15511560565016 + 15511560565017.

It is an arithmetic number, because the mean of its divisors is an integer number (15511560565017).

Almost surely, 2^{31023121130033} is an apocalyptic number.

It is an amenable number.

31023121130033 is a deficient number, since it is larger than the sum of its proper divisors (1).

31023121130033 is an equidigital number, since it uses as much as digits as its factorization.

31023121130033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 31023121130033 its reverse (33003112132013), we get a palindrome (64026233262046).

The spelling of 31023121130033 in words is "thirty-one trillion, twenty-three billion, one hundred twenty-one million, one hundred thirty thousand, thirty-three".