21434034031 has 8 divisors (see below), whose sum is σ = 21658173264. Its totient is φ = 21209959680.

The previous prime is 21434034023. The next prime is 21434034047. The reversal of 21434034031 is 13043043412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21434034031 - 2³ = 21434034023 is a prime.

It is a super-3 number, since 3×21434034031³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21434033987 and 21434034005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21434034091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 939621 + ... + 962161.

It is an arithmetic number, because the mean of its divisors is an integer number (2707271658).

Almost surely, 2^21434034031 is an apocalyptic number.

21434034031 is a deficient number, since it is larger than the sum of its proper divisors (224139233).

21434034031 is an equidigital number, since it uses as much as digits as its factorization.

21434034031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32441.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21434034031 its reverse (13043043412), we get a palindrome (34477077443).

The spelling of 21434034031 in words is "twenty-one billion, four hundred thirty-four million, thirty-four thousand, thirty-one".