1011243213 has 24 divisors (see below), whose sum is σ = 1557046400. Its totient is φ = 630586944.

The previous prime is 1011243203. The next prime is 1011243223. The reversal of 1011243213 is 3123421101.

1011243213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1011243203) and next prime (1011243223).

It is not a de Polignac number, because 1011243213 - 2²⁶ = 944134349 is a prime.

It is a super-2 number, since 2×1011243213² = 2045225671677126738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011243203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23920 + ... + 50937.

Almost surely, 2^1011243213 is an apocalyptic number.

It is an amenable number.

1011243213 is a deficient number, since it is larger than the sum of its proper divisors (545803187).

1011243213 is a wasteful number, since it uses less digits than its factorization.

1011243213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74961 (or 74958 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1011243213 is about 31800.0505188278. The cubic root of 1011243213 is about 1003.7337792085.

Adding to 1011243213 its reverse (3123421101), we get a palindrome (4134664314).

The spelling of 1011243213 in words is "one billion, eleven million, two hundred forty-three thousand, two hundred thirteen".