100026631 has 2 divisors, whose sum is σ = 100026632. Its totient is φ = 100026630.

The previous prime is 100026587. The next prime is 100026637. The reversal of 100026631 is 136620001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100026631 - 2²¹ = 97929479 is a prime.

It is a super-2 number, since 2×100026631² = 20010653818420322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100026599 and 100026608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100026637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50013315 + 50013316.

It is an arithmetic number, because the mean of its divisors is an integer number (50013316).

Almost surely, 2^100026631 is an apocalyptic number.

100026631 is a deficient number, since it is larger than the sum of its proper divisors (1).

100026631 is an equidigital number, since it uses as much as digits as its factorization.

100026631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 100026631 is about 10001.3314613605. The cubic root of 100026631 is about 464.2000830883.

Adding to 100026631 its reverse (136620001), we get a palindrome (236646632).

The spelling of 100026631 in words is "one hundred million, twenty-six thousand, six hundred thirty-one".