12021023031 has 8 divisors (see below), whose sum is σ = 16051849200. Its totient is φ = 8002106112.

The previous prime is 12021023029. The next prime is 12021023033. The reversal of 12021023031 is 13032012021.

It is an interprime number because it is at equal distance from previous prime (12021023029) and next prime (12021023033).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12021023031 - 2¹ = 12021023029 is a prime.

It is a super-2 number, since 2×12021023031² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12021023031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021023033) 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, 2974956 + ... + 2978993.

It is an arithmetic number, because the mean of its divisors is an integer number (2006481150).

Almost surely, 2^12021023031 is an apocalyptic number.

12021023031 is a deficient number, since it is larger than the sum of its proper divisors (4030826169).

12021023031 is an equidigital number, since it uses as much as digits as its factorization.

12021023031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5954625.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12021023031 its reverse (13032012021), we get a palindrome (25053035052).

The spelling of 12021023031 in words is "twelve billion, twenty-one million, twenty-three thousand, thirty-one".