1031131030231 has 4 divisors (see below), whose sum is σ = 1032962524632. Its totient is φ = 1029299535832.

The previous prime is 1031131030217. The next prime is 1031131030249. The reversal of 1031131030231 is 1320301311301.

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 1031131030231 - 2¹¹ = 1031131028183 is a prime.

It is a super-2 number, since 2×1031131030231² (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 = 1031131030199 and 1031131030208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031131030201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 915746356 + ... + 915747481.

It is an arithmetic number, because the mean of its divisors is an integer number (258240631158).

Almost surely, 2^{1031131030231} is an apocalyptic number.

1031131030231 is a deficient number, since it is larger than the sum of its proper divisors (1831494401).

1031131030231 is an equidigital number, since it uses as much as digits as its factorization.

1031131030231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831494400.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 1031131030231 its reverse (1320301311301), we get a palindrome (2351432341532).

The spelling of 1031131030231 in words is "one trillion, thirty-one billion, one hundred thirty-one million, thirty thousand, two hundred thirty-one".