21232233031 has 8 divisors (see below), whose sum is σ = 22375105200. Its totient is φ = 20091899520.

The previous prime is 21232233019. The next prime is 21232233049. The reversal of 21232233031 is 13033223212.

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 21232233031 - 2²³ = 21223844423 is a prime.

It is a super-2 number, since 2×21232233031² (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 = 21232232993 and 21232233011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232233131) 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, 617476 + ... + 650953.

It is an arithmetic number, because the mean of its divisors is an integer number (2796888150).

Almost surely, 2^21232233031 is an apocalyptic number.

21232233031 is a deficient number, since it is larger than the sum of its proper divisors (1142872169).

21232233031 is a wasteful number, since it uses less digits than its factorization.

21232233031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269329.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21232233031 its reverse (13033223212), we get a palindrome (34265456243).

The spelling of 21232233031 in words is "twenty-one billion, two hundred thirty-two million, two hundred thirty-three thousand, thirty-one".