1031223231251 has 2 divisors, whose sum is σ = 1031223231252. Its totient is φ = 1031223231250.

The previous prime is 1031223231191. The next prime is 1031223231263. The reversal of 1031223231251 is 1521323221301.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1031223231251 - 2³⁰ = 1030149489427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1031223231251.

It is not a weakly prime, because it can be changed into another prime (1031223231551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515611615625 + 515611615626.

It is an arithmetic number, because the mean of its divisors is an integer number (515611615626).

Almost surely, 2^{1031223231251} is an apocalyptic number.

1031223231251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031223231251 is an equidigital number, since it uses as much as digits as its factorization.

1031223231251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 1031223231251 its reverse (1521323221301), we get a palindrome (2552546452552).

The spelling of 1031223231251 in words is "one trillion, thirty-one billion, two hundred twenty-three million, two hundred thirty-one thousand, two hundred fifty-one".