2215231202031 has 4 divisors (see below), whose sum is σ = 2953641602712. Its totient is φ = 1476820801352.

The previous prime is 2215231201973. The next prime is 2215231202083. The reversal of 2215231202031 is 1302021325122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2215231202031 is a prime.

It is a super-2 number, since 2×2215231202031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2215231201992 and 2215231202010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215231202731) 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, 369205200336 + ... + 369205200341.

It is an arithmetic number, because the mean of its divisors is an integer number (738410400678).

Almost surely, 2^{2215231202031} is an apocalyptic number.

2215231202031 is a deficient number, since it is larger than the sum of its proper divisors (738410400681).

2215231202031 is an equidigital number, since it uses as much as digits as its factorization.

2215231202031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738410400680.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 2215231202031 its reverse (1302021325122), we get a palindrome (3517252527153).

The spelling of 2215231202031 in words is "two trillion, two hundred fifteen billion, two hundred thirty-one million, two hundred two thousand, thirty-one".