1223381403 has 6 divisors (see below), whose sum is σ = 1767106484. Its totient is φ = 815587596.

The previous prime is 1223381399. The next prime is 1223381473. The reversal of 1223381403 is 3041833221.

1223381403 is a `hidden beast` number, since 1 + 223 + 38 + 1 + 403 = 666.

It is not a de Polignac number, because 1223381403 - 2² = 1223381399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223381473) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67965625 + ... + 67965642.

Almost surely, 2^1223381403 is an apocalyptic number.

1223381403 is a deficient number, since it is larger than the sum of its proper divisors (543725081).

1223381403 is a wasteful number, since it uses less digits than its factorization.

1223381403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135931273 (or 135931270 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1223381403 is about 34976.8695425991. The cubic root of 1223381403 is about 1069.5160133908.

It can be divided in two parts, 12233 and 81403, that added together give a square (93636 = 306²).

The spelling of 1223381403 in words is "one billion, two hundred twenty-three million, three hundred eighty-one thousand, four hundred three".