1031313123011 has 4 divisors (see below), whose sum is σ = 1042900911000. Its totient is φ = 1019725335024.

The previous prime is 1031313122989. The next prime is 1031313123053. The reversal of 1031313123011 is 1103213131301.

1031313123011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031313123011 is a prime.

It is a super-2 number, since 2×1031313123011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031313128011) 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, 5793893861 + ... + 5793894038.

It is an arithmetic number, because the mean of its divisors is an integer number (260725227750).

Almost surely, 2^{1031313123011} is an apocalyptic number.

1031313123011 is a deficient number, since it is larger than the sum of its proper divisors (11587787989).

1031313123011 is an equidigital number, since it uses as much as digits as its factorization.

1031313123011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11587787988.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 1031313123011 its reverse (1103213131301), we get a palindrome (2134526254312).

The spelling of 1031313123011 in words is "one trillion, thirty-one billion, three hundred thirteen million, one hundred twenty-three thousand, eleven".