1231223434 has 32 divisors (see below), whose sum is σ = 2131249536. Its totient is φ = 522547200.

The previous prime is 1231223417. The next prime is 1231223437. The reversal of 1231223434 is 4343221321.

It is a super-2 number, since 2×1231223434² = 3031822288861504712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231223399 and 1231223408.

It is not an unprimeable number, because it can be changed into a prime (1231223437) 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, 768234 + ... + 769834.

It is an arithmetic number, because the mean of its divisors is an integer number (66601548).

Almost surely, 2^1231223434 is an apocalyptic number.

1231223434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1231223434 is a deficient number, since it is larger than the sum of its proper divisors (900026102).

1231223434 is a wasteful number, since it uses less digits than its factorization.

1231223434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110.

The product of its digits is 3456, while the sum is 25.

The square root of 1231223434 is about 35088.7935671775. The cubic root of 1231223434 is about 1071.7963925376.

Adding to 1231223434 its reverse (4343221321), we get a palindrome (5574444755).

The spelling of 1231223434 in words is "one billion, two hundred thirty-one million, two hundred twenty-three thousand, four hundred thirty-four".