10303631021 has 2 divisors, whose sum is σ = 10303631022. Its totient is φ = 10303631020.

The previous prime is 10303630949. The next prime is 10303631027. The reversal of 10303631021 is 12013630301.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7155298921 + 3148332100 = 84589^2 + 56110^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10303631021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10303630984 and 10303631002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10303631027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5151815510 + 5151815511.

It is an arithmetic number, because the mean of its divisors is an integer number (5151815511).

Almost surely, 2^10303631021 is an apocalyptic number.

It is an amenable number.

10303631021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10303631021 is an equidigital number, since it uses as much as digits as its factorization.

10303631021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

The spelling of 10303631021 in words is "ten billion, three hundred three million, six hundred thirty-one thousand, twenty-one".