31020123320051 has 2 divisors, whose sum is σ = 31020123320052. Its totient is φ = 31020123320050.

The previous prime is 31020123319993. The next prime is 31020123320077. The reversal of 31020123320051 is 15002332102013.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31020123320051 - 2¹⁰ = 31020123319027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31020123319999 and 31020123320026.

It is not a weakly prime, because it can be changed into another prime (31020123323051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15510061660025 + 15510061660026.

It is an arithmetic number, because the mean of its divisors is an integer number (15510061660026).

Almost surely, 2^{31020123320051} is an apocalyptic number.

31020123320051 is a deficient number, since it is larger than the sum of its proper divisors (1).

31020123320051 is an equidigital number, since it uses as much as digits as its factorization.

31020123320051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 31020123320051 its reverse (15002332102013), we get a palindrome (46022455422064).

The spelling of 31020123320051 in words is "thirty-one trillion, twenty billion, one hundred twenty-three million, three hundred twenty thousand, fifty-one".