1031213123077 has 2 divisors, whose sum is σ = 1031213123078. Its totient is φ = 1031213123076.

The previous prime is 1031213123029. The next prime is 1031213123123. The reversal of 1031213123077 is 7703213121301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 684261494401 + 346951628676 = 827201^2 + 589026^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031213123077 - 2²⁷ = 1031078905349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031213423077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515606561538 + 515606561539.

It is an arithmetic number, because the mean of its divisors is an integer number (515606561539).

Almost surely, 2^{1031213123077} is an apocalyptic number.

It is an amenable number.

1031213123077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031213123077 is an equidigital number, since it uses as much as digits as its factorization.

1031213123077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 31.

Adding to 1031213123077 its reverse (7703213121301), we get a palindrome (8734426244378).

The spelling of 1031213123077 in words is "one trillion, thirty-one billion, two hundred thirteen million, one hundred twenty-three thousand, seventy-seven".