1031243131 has 2 divisors, whose sum is σ = 1031243132. Its totient is φ = 1031243130.

The previous prime is 1031243113. The next prime is 1031243149. The reversal of 1031243131 is 1313421301.

Together with previous prime (1031243113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (1031243113) and next prime (1031243149).

It is a cyclic number.

It is not a de Polignac number, because 1031243131 - 2¹⁷ = 1031112059 is a prime.

It is a super-2 number, since 2×1031243131² = 2126924790469366322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1031243099 and 1031243108.

It is not a weakly prime, because it can be changed into another prime (1031240131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515621565 + 515621566.

It is an arithmetic number, because the mean of its divisors is an integer number (515621566).

Almost surely, 2^1031243131 is an apocalyptic number.

1031243131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031243131 is an equidigital number, since it uses as much as digits as its factorization.

1031243131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1031243131 is about 32112.9744962998. The cubic root of 1031243131 is about 1010.3077619766.

Adding to 1031243131 its reverse (1313421301), we get a palindrome (2344664432).

The spelling of 1031243131 in words is "one billion, thirty-one million, two hundred forty-three thousand, one hundred thirty-one".