1231022423 has 8 divisors (see below), whose sum is σ = 1249978992. Its totient is φ = 1212083136.

The previous prime is 1231022413. The next prime is 1231022437. The reversal of 1231022423 is 3242201321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1231022423 - 2²⁶ = 1163913559 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231022395 and 1231022404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231022413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280361 + ... + 284717.

It is an arithmetic number, because the mean of its divisors is an integer number (156247374).

Almost surely, 2^1231022423 is an apocalyptic number.

1231022423 is a deficient number, since it is larger than the sum of its proper divisors (18956569).

1231022423 is an equidigital number, since it uses as much as digits as its factorization.

1231022423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8641.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1231022423 is about 35085.9291312059. The cubic root of 1231022423 is about 1071.7380617792.

Adding to 1231022423 its reverse (3242201321), we get a palindrome (4473223744).

The spelling of 1231022423 in words is "one billion, two hundred thirty-one million, twenty-two thousand, four hundred twenty-three".