31131041 has 2 divisors, whose sum is σ = 31131042. Its totient is φ = 31131040.

The previous prime is 31131031. The next prime is 31131053. The reversal of 31131041 is 14013113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29430625 + 1700416 = 5425^2 + 1304^2 .

It is a cyclic number.

It is not a de Polignac number, because 31131041 - 2¹⁸ = 30868897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31131031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15565520 + 15565521.

It is an arithmetic number, because the mean of its divisors is an integer number (15565521).

Almost surely, 2^31131041 is an apocalyptic number.

It is an amenable number.

31131041 is a deficient number, since it is larger than the sum of its proper divisors (1).

31131041 is an equidigital number, since it uses as much as digits as its factorization.

31131041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 31131041 is about 5579.5197822035. The cubic root of 31131041 is about 314.5800770545.

Adding to 31131041 its reverse (14013113), we get a palindrome (45144154).

It can be divided in two parts, 31 and 131041, that added together give a 17-th power (131072 = 2¹⁷).

The spelling of 31131041 in words is "thirty-one million, one hundred thirty-one thousand, forty-one".