21314532373 has 2 divisors, whose sum is σ = 21314532374. Its totient is φ = 21314532372.

The previous prime is 21314532361. The next prime is 21314532401. The reversal of 21314532373 is 37323541312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21146103889 + 168428484 = 145417^2 + 12978^2 .

It is a cyclic number.

It is not a de Polignac number, because 21314532373 - 2¹³ = 21314524181 is a prime.

It is a super-2 number, since 2×21314532373² (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 (21314532313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10657266186 + 10657266187.

It is an arithmetic number, because the mean of its divisors is an integer number (10657266187).

Almost surely, 2^21314532373 is an apocalyptic number.

It is an amenable number.

21314532373 is a deficient number, since it is larger than the sum of its proper divisors (1).

21314532373 is an equidigital number, since it uses as much as digits as its factorization.

21314532373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 34.

The spelling of 21314532373 in words is "twenty-one billion, three hundred fourteen million, five hundred thirty-two thousand, three hundred seventy-three".