1023210131123 has 4 divisors (see below), whose sum is σ = 1024401296280. Its totient is φ = 1022018965968.

The previous prime is 1023210131117. The next prime is 1023210131189. The reversal of 1023210131123 is 3211310123201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1023210131123 - 2¹⁶ = 1023210065587 is a prime.

It is a super-2 number, since 2×1023210131123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1023210131095 and 1023210131104.

It is not an unprimeable number, because it can be changed into a prime (1023210191123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595581290 + ... + 595583007.

It is an arithmetic number, because the mean of its divisors is an integer number (256100324070).

Almost surely, 2^{1023210131123} is an apocalyptic number.

1023210131123 is a deficient number, since it is larger than the sum of its proper divisors (1191165157).

1023210131123 is an equidigital number, since it uses as much as digits as its factorization.

1023210131123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191165156.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1023210131123 its reverse (3211310123201), we get a palindrome (4234520254324).

The spelling of 1023210131123 in words is "one trillion, twenty-three billion, two hundred ten million, one hundred thirty-one thousand, one hundred twenty-three".