21032310031 has 2 divisors, whose sum is σ = 21032310032. Its totient is φ = 21032310030.

The previous prime is 21032309959. The next prime is 21032310043. The reversal of 21032310031 is 13001323012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21032310031 - 2¹³ = 21032301839 is a prime.

It is a super-2 number, since 2×21032310031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21032309987 and 21032310014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21032310331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10516155015 + 10516155016.

It is an arithmetic number, because the mean of its divisors is an integer number (10516155016).

Almost surely, 2^21032310031 is an apocalyptic number.

21032310031 is a deficient number, since it is larger than the sum of its proper divisors (1).

21032310031 is an equidigital number, since it uses as much as digits as its factorization.

21032310031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21032310031 its reverse (13001323012), we get a palindrome (34033633043).

The spelling of 21032310031 in words is "twenty-one billion, thirty-two million, three hundred ten thousand, thirty-one".