90103631 has 2 divisors, whose sum is σ = 90103632. Its totient is φ = 90103630.

The previous prime is 90103597. The next prime is 90103669. The reversal of 90103631 is 13630109.

It is a weak prime.

It is an emirp because it is prime and its reverse (13630109) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90103631 - 2¹⁴ = 90087247 is a prime.

It is a super-2 number, since 2×90103631² = 16237328638768322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 90103597 and 90103606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90100631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45051815 + 45051816.

It is an arithmetic number, because the mean of its divisors is an integer number (45051816).

Almost surely, 2^90103631 is an apocalyptic number.

90103631 is a deficient number, since it is larger than the sum of its proper divisors (1).

90103631 is an equidigital number, since it uses as much as digits as its factorization.

90103631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 90103631 is about 9492.2932424151. The cubic root of 90103631 is about 448.3124132924.

The spelling of 90103631 in words is "ninety million, one hundred three thousand, six hundred thirty-one".