1213231023 has 12 divisors (see below), whose sum is σ = 1752800400. Its totient is φ = 808656576.

The previous prime is 1213231009. The next prime is 1213231039. The reversal of 1213231023 is 3201323121.

1213231023 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1213231023 - 2¹⁰ = 1213229999 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1213230987 and 1213231005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213231223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47590 + ... + 68492.

It is an arithmetic number, because the mean of its divisors is an integer number (146066700).

Almost surely, 2^1213231023 is an apocalyptic number.

1213231023 is a deficient number, since it is larger than the sum of its proper divisors (539569377).

1213231023 is a wasteful number, since it uses less digits than its factorization.

1213231023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27358 (or 27355 counting only the distinct ones).

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

The square root of 1213231023 is about 34831.4659898202. The cubic root of 1213231023 is about 1066.5498745932.

Adding to 1213231023 its reverse (3201323121), we get a palindrome (4414554144).

The spelling of 1213231023 in words is "one billion, two hundred thirteen million, two hundred thirty-one thousand, twenty-three".