1223231031 has 32 divisors (see below), whose sum is σ = 1980675840. Its totient is φ = 739951200.

The previous prime is 1223231021. The next prime is 1223231059. The reversal of 1223231031 is 1301323221.

It is not a de Polignac number, because 1223231031 - 2⁵ = 1223230999 is a prime.

It is a super-2 number, since 2×1223231031² = 2992588310402645922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1223230995 and 1223231013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223231021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165981 + ... + 173193.

It is an arithmetic number, because the mean of its divisors is an integer number (61896120).

Almost surely, 2^1223231031 is an apocalyptic number.

1223231031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1223231031 is a deficient number, since it is larger than the sum of its proper divisors (757444809).

1223231031 is a wasteful number, since it uses less digits than its factorization.

1223231031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7804 (or 7798 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1223231031 is about 34974.7198845109. The cubic root of 1223231031 is about 1069.4721917198.

Adding to 1223231031 its reverse (1301323221), we get a palindrome (2524554252).

The spelling of 1223231031 in words is "one billion, two hundred twenty-three million, two hundred thirty-one thousand, thirty-one".