21304232707 has 2 divisors, whose sum is σ = 21304232708. Its totient is φ = 21304232706.

The previous prime is 21304232603. The next prime is 21304232717. The reversal of 21304232707 is 70723240312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21304232707 - 2²³ = 21295844099 is a prime.

It is not a weakly prime, because it can be changed into another prime (21304232717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10652116353 + 10652116354.

It is an arithmetic number, because the mean of its divisors is an integer number (10652116354).

Almost surely, 2^21304232707 is an apocalyptic number.

21304232707 is a deficient number, since it is larger than the sum of its proper divisors (1).

21304232707 is an equidigital number, since it uses as much as digits as its factorization.

21304232707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 31.

The spelling of 21304232707 in words is "twenty-one billion, three hundred four million, two hundred thirty-two thousand, seven hundred seven".