100631212709 has 2 divisors, whose sum is σ = 100631212710. Its totient is φ = 100631212708.

The previous prime is 100631212679. The next prime is 100631212711. The reversal of 100631212709 is 907212136001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87510655684 + 13120557025 = 295822^2 + 114545^2 .

It is a cyclic number.

It is not a de Polignac number, because 100631212709 - 2²⁰ = 100630164133 is a prime.

Together with 100631212711, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100631212729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50315606354 + 50315606355.

It is an arithmetic number, because the mean of its divisors is an integer number (50315606355).

Almost surely, 2^100631212709 is an apocalyptic number.

It is an amenable number.

100631212709 is a deficient number, since it is larger than the sum of its proper divisors (1).

100631212709 is an equidigital number, since it uses as much as digits as its factorization.

100631212709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The spelling of 100631212709 in words is "one hundred billion, six hundred thirty-one million, two hundred twelve thousand, seven hundred nine".