1023123231 has 40 divisors (see below), whose sum is σ = 1658724144. Its totient is φ = 624723840.

The previous prime is 1023123221. The next prime is 1023123247. The reversal of 1023123231 is 1323213201.

It is not a de Polignac number, because 1023123231 - 2⁹ = 1023122719 is a prime.

It is a super-2 number, since 2×1023123231² = 2093562291623758722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023123221) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 134235 + ... + 141651.

Almost surely, 2^1023123231 is an apocalyptic number.

1023123231 is a deficient number, since it is larger than the sum of its proper divisors (635600913).

1023123231 is a wasteful number, since it uses less digits than its factorization.

1023123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7573 (or 7564 counting only the distinct ones).

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

The square root of 1023123231 is about 31986.2975506700. The cubic root of 1023123231 is about 1007.6490859716.

Adding to 1023123231 its reverse (1323213201), we get a palindrome (2346336432).

The spelling of 1023123231 in words is "one billion, twenty-three million, one hundred twenty-three thousand, two hundred thirty-one".