1023312113231 has 4 divisors (see below), whose sum is σ = 1036265431200. Its totient is φ = 1010358795264.

The previous prime is 1023312113209. The next prime is 1023312113267. The reversal of 1023312113231 is 1323112133201.

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 1023312113231 - 2⁶ = 1023312113167 is a prime.

It is a super-2 number, since 2×1023312113231² (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 = 1023312113197 and 1023312113206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023312113731) 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, 6476658866 + ... + 6476659023.

It is an arithmetic number, because the mean of its divisors is an integer number (259066357800).

Almost surely, 2^{1023312113231} is an apocalyptic number.

1023312113231 is a deficient number, since it is larger than the sum of its proper divisors (12953317969).

1023312113231 is an equidigital number, since it uses as much as digits as its factorization.

1023312113231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12953317968.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1023312113231 its reverse (1323112133201), we get a palindrome (2346424246432).

The spelling of 1023312113231 in words is "one trillion, twenty-three billion, three hundred twelve million, one hundred thirteen thousand, two hundred thirty-one".