21400301031 has 4 divisors (see below), whose sum is σ = 28533734712. Its totient is φ = 14266867352.

The previous prime is 21400301011. The next prime is 21400301059. The reversal of 21400301031 is 13010300412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21400301031 - 2¹³ = 21400292839 is a prime.

It is a super-2 number, since 2×21400301031² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21400301031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21400301011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3566716836 + ... + 3566716841.

It is an arithmetic number, because the mean of its divisors is an integer number (7133433678).

Almost surely, 2^21400301031 is an apocalyptic number.

21400301031 is a deficient number, since it is larger than the sum of its proper divisors (7133433681).

21400301031 is an equidigital number, since it uses as much as digits as its factorization.

21400301031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7133433680.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21400301031 its reverse (13010300412), we get a palindrome (34410601443).

The spelling of 21400301031 in words is "twenty-one billion, four hundred million, three hundred one thousand, thirty-one".