1213444312031 has 8 divisors (see below), whose sum is σ = 1386811572864. Its totient is φ = 1040081569560.

The previous prime is 1213444312021. The next prime is 1213444312049. The reversal of 1213444312031 is 1302134443121.

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 1213444312031 - 2¹⁴ = 1213444295647 is a prime.

It is a super-2 number, since 2×1213444312031² (a number of 25 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 = 1213444311985 and 1213444312003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213444312021) 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, 533105 + ... + 1646538.

It is an arithmetic number, because the mean of its divisors is an integer number (173351446608).

Almost surely, 2^{1213444312031} is an apocalyptic number.

1213444312031 is a deficient number, since it is larger than the sum of its proper divisors (173367260833).

1213444312031 is an equidigital number, since it uses as much as digits as its factorization.

1213444312031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259181.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 1213444312031 its reverse (1302134443121), we get a palindrome (2515578755152).

The spelling of 1213444312031 in words is "one trillion, two hundred thirteen billion, four hundred forty-four million, three hundred twelve thousand, thirty-one".