3121342432243 has 4 divisors (see below), whose sum is σ = 3567248494000. Its totient is φ = 2675436370488.

The previous prime is 3121342432151. The next prime is 3121342432289. The reversal of 3121342432243 is 3422342431213.

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

It is not a de Polignac number, because 3121342432243 - 2¹⁷ = 3121342301171 is a prime.

It is a super-2 number, since 2×3121342432243² (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 = 3121342432199 and 3121342432208.

It is not an unprimeable number, because it can be changed into a prime (3121342732243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222953030868 + ... + 222953030881.

It is an arithmetic number, because the mean of its divisors is an integer number (891812123500).

Almost surely, 2^{3121342432243} is an apocalyptic number.

3121342432243 is a deficient number, since it is larger than the sum of its proper divisors (445906061757).

3121342432243 is an equidigital number, since it uses as much as digits as its factorization.

3121342432243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445906061756.

The product of its digits is 82944, while the sum is 34.

Adding to 3121342432243 its reverse (3422342431213), we get a palindrome (6543684863456).

The spelling of 3121342432243 in words is "three trillion, one hundred twenty-one billion, three hundred forty-two million, four hundred thirty-two thousand, two hundred forty-three".