21130033031 has 8 divisors (see below), whose sum is σ = 21642902160. Its totient is φ = 20618140032.

The previous prime is 21130032991. The next prime is 21130033033. The reversal of 21130033031 is 13033003112.

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 21130033031 - 2⁶ = 21130032967 is a prime.

It is a super-2 number, since 2×21130033031² (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 (21130033033) 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, 200120 + ... + 286893.

It is an arithmetic number, because the mean of its divisors is an integer number (2705362770).

Almost surely, 2^21130033031 is an apocalyptic number.

21130033031 is a deficient number, since it is larger than the sum of its proper divisors (512869129).

21130033031 is a wasteful number, since it uses less digits than its factorization.

21130033031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488065.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 21130033031 its reverse (13033003112), we get a palindrome (34163036143).

The spelling of 21130033031 in words is "twenty-one billion, one hundred thirty million, thirty-three thousand, thirty-one".