511031263241 has 2 divisors, whose sum is σ = 511031263242. Its totient is φ = 511031263240.

The previous prime is 511031263121. The next prime is 511031263261. The reversal of 511031263241 is 142362130115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 377861007616 + 133170255625 = 614704^2 + 364925^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-511031263241 is a prime.

It is a super-2 number, since 2×511031263241² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (511031263261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255515631620 + 255515631621.

It is an arithmetic number, because the mean of its divisors is an integer number (255515631621).

Almost surely, 2^511031263241 is an apocalyptic number.

It is an amenable number.

511031263241 is a deficient number, since it is larger than the sum of its proper divisors (1).

511031263241 is an equidigital number, since it uses as much as digits as its factorization.

511031263241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 511031263241 its reverse (142362130115), we get a palindrome (653393393356).

The spelling of 511031263241 in words is "five hundred eleven billion, thirty-one million, two hundred sixty-three thousand, two hundred forty-one".