1031411221 has 2 divisors, whose sum is σ = 1031411222. Its totient is φ = 1031411220.

The previous prime is 1031411159. The next prime is 1031411231. The reversal of 1031411221 is 1221141301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 921790321 + 109620900 = 30361^2 + 10470^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031411221 - 2²⁵ = 997856789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1031411195 and 1031411204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031411231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515705610 + 515705611.

It is an arithmetic number, because the mean of its divisors is an integer number (515705611).

Almost surely, 2^1031411221 is an apocalyptic number.

It is an amenable number.

1031411221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031411221 is an equidigital number, since it uses as much as digits as its factorization.

1031411221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1031411221 is about 32115.5915561274. The cubic root of 1031411221 is about 1010.3626515239.

Adding to 1031411221 its reverse (1221141301), we get a palindrome (2252552522).

The spelling of 1031411221 in words is "one billion, thirty-one million, four hundred eleven thousand, two hundred twenty-one".