3121222031231 has 8 divisors (see below), whose sum is σ = 3291951692400. Its totient is φ = 2951137851840.

The previous prime is 3121222031219. The next prime is 3121222031237. The reversal of 3121222031231 is 1321302221213.

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

It is a cyclic number.

It is not a de Polignac number, because 3121222031231 - 2¹⁰ = 3121222030207 is a prime.

It is a super-2 number, since 2×3121222031231² (a number of 26 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 = 3121222031197 and 3121222031206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121222031237) 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, 161360510 + ... + 161379851.

It is an arithmetic number, because the mean of its divisors is an integer number (411493961550).

Almost surely, 2^{3121222031231} is an apocalyptic number.

3121222031231 is a deficient number, since it is larger than the sum of its proper divisors (170729661169).

3121222031231 is a wasteful number, since it uses less digits than its factorization.

3121222031231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322740889.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 3121222031231 its reverse (1321302221213), we get a palindrome (4442524252444).

The spelling of 3121222031231 in words is "three trillion, one hundred twenty-one billion, two hundred twenty-two million, thirty-one thousand, two hundred thirty-one".