21302133031 has 16 divisors (see below), whose sum is σ = 22716417024. Its totient is φ = 19929105504.

The previous prime is 21302133007. The next prime is 21302133091. The reversal of 21302133031 is 13033120312.

It is not a de Polignac number, because 21302133031 - 2⁹ = 21302132519 is a prime.

It is a super-2 number, since 2×21302133031² (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 (21302133091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1856845 + ... + 1868281.

It is an arithmetic number, because the mean of its divisors is an integer number (1419776064).

Almost surely, 2^21302133031 is an apocalyptic number.

21302133031 is a deficient number, since it is larger than the sum of its proper divisors (1414283993).

21302133031 is a wasteful number, since it uses less digits than its factorization.

21302133031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13230.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21302133031 its reverse (13033120312), we get a palindrome (34335253343).

The spelling of 21302133031 in words is "twenty-one billion, three hundred two million, one hundred thirty-three thousand, thirty-one".