11021232031 has 4 divisors (see below), whose sum is σ = 11024910000. Its totient is φ = 11017554064.

The previous prime is 11021232029. The next prime is 11021232043. The reversal of 11021232031 is 13023212011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11021232031 - 2¹ = 11021232029 is a prime.

It is a super-2 number, since 2×11021232031² (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 = 11021231996 and 11021232014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021232011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1834486 + ... + 1840483.

It is an arithmetic number, because the mean of its divisors is an integer number (2756227500).

Almost surely, 2^11021232031 is an apocalyptic number.

11021232031 is a deficient number, since it is larger than the sum of its proper divisors (3677969).

11021232031 is an equidigital number, since it uses as much as digits as its factorization.

11021232031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3677968.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11021232031 its reverse (13023212011), we get a palindrome (24044444042).

The spelling of 11021232031 in words is "eleven billion, twenty-one million, two hundred thirty-two thousand, thirty-one".