531621126107 has 2 divisors, whose sum is σ = 531621126108. Its totient is φ = 531621126106.

The previous prime is 531621125941. The next prime is 531621126137. The reversal of 531621126107 is 701621126135.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 531621126107 - 2¹⁰ = 531621125083 is a prime.

It is not a weakly prime, because it can be changed into another prime (531621126137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265810563053 + 265810563054.

It is an arithmetic number, because the mean of its divisors is an integer number (265810563054).

Almost surely, 2^531621126107 is an apocalyptic number.

531621126107 is a deficient number, since it is larger than the sum of its proper divisors (1).

531621126107 is an equidigital number, since it uses as much as digits as its factorization.

531621126107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 35.

The spelling of 531621126107 in words is "five hundred thirty-one billion, six hundred twenty-one million, one hundred twenty-six thousand, one hundred seven".