1223285031 has 16 divisors (see below), whose sum is σ = 1918879200. Its totient is φ = 767551104.

The previous prime is 1223285029. The next prime is 1223285051. The reversal of 1223285031 is 1305823221.

1223285031 is a `hidden beast` number, since 122 + 32 + 8 + 503 + 1 = 666.

It is not a de Polignac number, because 1223285031 - 2¹ = 1223285029 is a prime.

It is a super-2 number, since 2×1223285031² = 2992852534137341922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1223284986 and 1223285004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223285051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1332096 + ... + 1333013.

It is an arithmetic number, because the mean of its divisors is an integer number (119929950).

Almost surely, 2^1223285031 is an apocalyptic number.

1223285031 is a deficient number, since it is larger than the sum of its proper divisors (695594169).

1223285031 is a wasteful number, since it uses less digits than its factorization.

1223285031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665135 (or 2665129 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1223285031 is about 34975.4918621597. The cubic root of 1223285031 is about 1069.4879289074.

The spelling of 1223285031 in words is "one billion, two hundred twenty-three million, two hundred eighty-five thousand, thirty-one".