21010241431 has 8 divisors (see below), whose sum is σ = 21900149360. Its totient is φ = 20137284288.

The previous prime is 21010241429. The next prime is 21010241459. The reversal of 21010241431 is 13414201012.

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 21010241431 - 2¹ = 21010241429 is a prime.

It is a super-2 number, since 2×21010241431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21010241399 and 21010241408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010241731) 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, 4235166 + ... + 4240123.

It is an arithmetic number, because the mean of its divisors is an integer number (2737518670).

Almost surely, 2^21010241431 is an apocalyptic number.

21010241431 is a deficient number, since it is larger than the sum of its proper divisors (889907929).

21010241431 is an equidigital number, since it uses as much as digits as its factorization.

21010241431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8475393.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21010241431 its reverse (13414201012), we get a palindrome (34424442443).

The spelling of 21010241431 in words is "twenty-one billion, ten million, two hundred forty-one thousand, four hundred thirty-one".