1223770403 has 4 divisors (see below), whose sum is σ = 1223902680. Its totient is φ = 1223638128.

The previous prime is 1223770399. The next prime is 1223770423. The reversal of 1223770403 is 3040773221.

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

It is a cyclic number.

It is not a de Polignac number, because 1223770403 - 2² = 1223770399 is a prime.

It is a super-2 number, since 2×1223770403² = 2995227998517564818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223770423) 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, 51125 + ... + 71142.

It is an arithmetic number, because the mean of its divisors is an integer number (305975670).

Almost surely, 2^1223770403 is an apocalyptic number.

1223770403 is a deficient number, since it is larger than the sum of its proper divisors (132277).

1223770403 is a wasteful number, since it uses less digits than its factorization.

1223770403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132276.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 1223770403 is about 34982.4299184605. The cubic root of 1223770403 is about 1069.6293597927.

The spelling of 1223770403 in words is "one billion, two hundred twenty-three million, seven hundred seventy thousand, four hundred three".