1011505213 has 2 divisors, whose sum is σ = 1011505214. Its totient is φ = 1011505212.

The previous prime is 1011505207. The next prime is 1011505241. The reversal of 1011505213 is 3125051101.

1011505213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 540702009 + 470803204 = 23253^2 + 21698^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011505213 - 2¹³ = 1011497021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011505013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505752606 + 505752607.

It is an arithmetic number, because the mean of its divisors is an integer number (505752607).

Almost surely, 2^1011505213 is an apocalyptic number.

It is an amenable number.

1011505213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011505213 is an equidigital number, since it uses as much as digits as its factorization.

1011505213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 1011505213 is about 31804.1697423467. The cubic root of 1011505213 is about 1003.8204565243.

Adding to 1011505213 its reverse (3125051101), we get a palindrome (4136556314).

The spelling of 1011505213 in words is "one billion, eleven million, five hundred five thousand, two hundred thirteen".