1223031401 has 4 divisors (see below), whose sum is σ = 1227544704. Its totient is φ = 1218518100.

The previous prime is 1223031377. The next prime is 1223031421. The reversal of 1223031401 is 1041303221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1223031401 - 2³⁰ = 149289577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1223031401.

It is not an unprimeable number, because it can be changed into a prime (1223031421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2256245 + ... + 2256786.

It is an arithmetic number, because the mean of its divisors is an integer number (306886176).

Almost surely, 2^1223031401 is an apocalyptic number.

It is an amenable number.

1223031401 is a deficient number, since it is larger than the sum of its proper divisors (4513303).

1223031401 is an equidigital number, since it uses as much as digits as its factorization.

1223031401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4513302.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1223031401 is about 34971.8658495654. The cubic root of 1223031401 is about 1069.4140096475.

Adding to 1223031401 its reverse (1041303221), we get a palindrome (2264334622).

The spelling of 1223031401 in words is "one billion, two hundred twenty-three million, thirty-one thousand, four hundred one".