21232677031 has 2 divisors, whose sum is σ = 21232677032. Its totient is φ = 21232677030.

The previous prime is 21232677007. The next prime is 21232677071. The reversal of 21232677031 is 13077623212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21232677031 - 2¹³ = 21232668839 is a prime.

It is a super-2 number, since 2×21232677031² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21232677071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616338515 + 10616338516.

It is an arithmetic number, because the mean of its divisors is an integer number (10616338516).

Almost surely, 2^21232677031 is an apocalyptic number.

21232677031 is a deficient number, since it is larger than the sum of its proper divisors (1).

21232677031 is an equidigital number, since it uses as much as digits as its factorization.

21232677031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 34.

The spelling of 21232677031 in words is "twenty-one billion, two hundred thirty-two million, six hundred seventy-seven thousand, thirty-one".