21130035031 has 8 divisors (see below), whose sum is σ = 24149490560. Its totient is φ = 18110799288.

The previous prime is 21130035001. The next prime is 21130035053. The reversal of 21130035031 is 13053003112.

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 21130035031 - 2⁷ = 21130034903 is a prime.

It is a super-2 number, since 2×21130035031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21130035001) 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 7 ways as a sum of consecutive naturals, for example, 354160 + ... + 409498.

It is an arithmetic number, because the mean of its divisors is an integer number (3018686320).

Almost surely, 2^21130035031 is an apocalyptic number.

21130035031 is a deficient number, since it is larger than the sum of its proper divisors (3019455529).

21130035031 is an equidigital number, since it uses as much as digits as its factorization.

21130035031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109893.

The product of its (nonzero) digits is 270, while the sum is 19.

Adding to 21130035031 its reverse (13053003112), we get a palindrome (34183038143).

The spelling of 21130035031 in words is "twenty-one billion, one hundred thirty million, thirty-five thousand, thirty-one".