12031033220031 has 32 divisors (see below), whose sum is σ = 18587707821568. Its totient is φ = 6779397980160.

The previous prime is 12031033219999. The next prime is 12031033220077. The reversal of 12031033220031 is 13002233013021.

It is not a de Polignac number, because 12031033220031 - 2⁵ = 12031033219999 is a prime.

It is a super-2 number, since 2×12031033220031² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031033222031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7262271 + ... + 8763711.

It is an arithmetic number, because the mean of its divisors is an integer number (580865869424).

Almost surely, 2^{12031033220031} is an apocalyptic number.

12031033220031 is a deficient number, since it is larger than the sum of its proper divisors (6556674601537).

12031033220031 is a wasteful number, since it uses less digits than its factorization.

12031033220031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506751.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 12031033220031 its reverse (13002233013021), we get a palindrome (25033266233052).

The spelling of 12031033220031 in words is "twelve trillion, thirty-one billion, thirty-three million, two hundred twenty thousand, thirty-one".