10031303921 has 2 divisors, whose sum is σ = 10031303922. Its totient is φ = 10031303920.

The previous prime is 10031303903. The next prime is 10031303923. The reversal of 10031303921 is 12930313001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8906640625 + 1124663296 = 94375^2 + 33536^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10031303921 is a prime.

Together with 10031303923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10031303923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5015651960 + 5015651961.

It is an arithmetic number, because the mean of its divisors is an integer number (5015651961).

Almost surely, 2^10031303921 is an apocalyptic number.

It is an amenable number.

10031303921 is a deficient number, since it is larger than the sum of its proper divisors (1).

10031303921 is an equidigital number, since it uses as much as digits as its factorization.

10031303921 is an evil number, because the sum of its binary digits is even.

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

Adding to 10031303921 its reverse (12930313001), we get a palindrome (22961616922).

The spelling of 10031303921 in words is "ten billion, thirty-one million, three hundred three thousand, nine hundred twenty-one".