1223894031 has 4 divisors (see below), whose sum is σ = 1631858712. Its totient is φ = 815929352.

The previous prime is 1223894011. The next prime is 1223894041. The reversal of 1223894031 is 1304983221.

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 1223894031 - 2²⁵ = 1190339599 is a prime.

It is a super-2 number, since 2×1223894031² = 2995833198234857922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1223893983 and 1223894001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223894011) 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, 203982336 + ... + 203982341.

It is an arithmetic number, because the mean of its divisors is an integer number (407964678).

Almost surely, 2^1223894031 is an apocalyptic number.

1223894031 is a deficient number, since it is larger than the sum of its proper divisors (407964681).

1223894031 is an equidigital number, since it uses as much as digits as its factorization.

1223894031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407964680.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 1223894031 is about 34984.1968751606. The cubic root of 1223894031 is about 1069.6653773565.

The spelling of 1223894031 in words is "one billion, two hundred twenty-three million, eight hundred ninety-four thousand, thirty-one".