1223400512343 has 8 divisors (see below), whose sum is σ = 1635821649648. Its totient is φ = 813289858304.

The previous prime is 1223400512317. The next prime is 1223400512351. The reversal of 1223400512343 is 3432150043221.

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 1223400512343 - 2⁵ = 1223400512311 is a prime.

It is a super-2 number, since 2×1223400512343² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1223400512343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223400512363) 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, 577619580 + ... + 577621697.

It is an arithmetic number, because the mean of its divisors is an integer number (204477706206).

Almost surely, 2^{1223400512343} is an apocalyptic number.

1223400512343 is a deficient number, since it is larger than the sum of its proper divisors (412421137305).

1223400512343 is a wasteful number, since it uses less digits than its factorization.

1223400512343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155241633.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 1223400512343 its reverse (3432150043221), we get a palindrome (4655550555564).

The spelling of 1223400512343 in words is "one trillion, two hundred twenty-three billion, four hundred million, five hundred twelve thousand, three hundred forty-three".