1231231023 has 60 divisors (see below), whose sum is σ = 2033511480. Its totient is φ = 741834720.

The previous prime is 1231231007. The next prime is 1231231033. The reversal of 1231231023 is 3201321321.

It is not a de Polignac number, because 1231231023 - 2⁴ = 1231231007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1231230987 and 1231231005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231231033) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2636236 + ... + 2636702.

It is an arithmetic number, because the mean of its divisors is an integer number (33891858).

Almost surely, 2^1231231023 is an apocalyptic number.

1231231023 is a deficient number, since it is larger than the sum of its proper divisors (802280457).

1231231023 is a wasteful number, since it uses less digits than its factorization.

1231231023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770 (or 750 counting only the distinct ones).

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

The square root of 1231231023 is about 35088.9017069500. The cubic root of 1231231023 is about 1071.7985946416.

Adding to 1231231023 its reverse (3201321321), we get a palindrome (4432552344).

The spelling of 1231231023 in words is "one billion, two hundred thirty-one million, two hundred thirty-one thousand, twenty-three".