1031131224431 has 16 divisors (see below), whose sum is σ = 1315463094528. Its totient is φ = 784793318400.

The previous prime is 1031131224401. The next prime is 1031131224439. The reversal of 1031131224431 is 1344221311301.

It is not a de Polignac number, because 1031131224431 - 2²² = 1031127030127 is a prime.

It is a super-2 number, since 2×1031131224431² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1031131224431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031131224439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155709650 + ... + 155716271.

It is an arithmetic number, because the mean of its divisors is an integer number (82216443408).

Almost surely, 2^{1031131224431} is an apocalyptic number.

1031131224431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1031131224431 is a deficient number, since it is larger than the sum of its proper divisors (284331870097).

1031131224431 is a wasteful number, since it uses less digits than its factorization.

1031131224431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311425982.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 1031131224431 its reverse (1344221311301), we get a palindrome (2375352535732).

The spelling of 1031131224431 in words is "one trillion, thirty-one billion, one hundred thirty-one million, two hundred twenty-four thousand, four hundred thirty-one".