1031011213 has 2 divisors, whose sum is σ = 1031011214. Its totient is φ = 1031011212.

The previous prime is 1031011187. The next prime is 1031011229. The reversal of 1031011213 is 3121101301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 701879049 + 329132164 = 26493^2 + 18142^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031011213 - 2¹³ = 1031003021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1031011193 and 1031011202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031011243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515505606 + 515505607.

It is an arithmetic number, because the mean of its divisors is an integer number (515505607).

Almost surely, 2^1031011213 is an apocalyptic number.

It is an amenable number.

1031011213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031011213 is an equidigital number, since it uses as much as digits as its factorization.

1031011213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1031011213 is about 32109.3633228689. The cubic root of 1031011213 is about 1010.2320196952.

Adding to 1031011213 its reverse (3121101301), we get a palindrome (4152112514).

The spelling of 1031011213 in words is "one billion, thirty-one million, eleven thousand, two hundred thirteen".