3101221121031 has 48 divisors (see below), whose sum is σ = 5066633714688. Its totient is φ = 1810884844800.

The previous prime is 3101221121027. The next prime is 3101221121039. The reversal of 3101221121031 is 1301211221013.

3101221121031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3101221121031 - 2² = 3101221121027 is a prime.

It is a super-2 number, since 2×3101221121031² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3101221120995 and 3101221121013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3101221121039) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1529106 + ... + 2922431.

It is an arithmetic number, because the mean of its divisors is an integer number (105554869056).

Almost surely, 2^{3101221121031} is an apocalyptic number.

3101221121031 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3101221121031 is a deficient number, since it is larger than the sum of its proper divisors (1965412593657).

3101221121031 is a wasteful number, since it uses less digits than its factorization.

3101221121031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4451812 (or 4451809 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 3101221121031 its reverse (1301211221013), we get a palindrome (4402432342044).

The spelling of 3101221121031 in words is "three trillion, one hundred one billion, two hundred twenty-one million, one hundred twenty-one thousand, thirty-one".