1011213 has 18 divisors (see below), whose sum is σ = 1699854. Its totient is φ = 577584.

The previous prime is 1011191. The next prime is 1011217. The reversal of 1011213 is 3121101.

It can be written as a sum of positive squares in only one way, i.e., 777924 + 233289 = 882^2 + 483^2 .

It is not a de Polignac number, because 1011213 - 2⁸ = 1010957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1011195 and 1011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011217) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 706 + ... + 1587.

2^1011213 is an apocalyptic number.

It is an amenable number.

1011213 is a deficient number, since it is larger than the sum of its proper divisors (688641).

1011213 is a wasteful number, since it uses less digits than its factorization.

1011213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313 (or 2303 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1011213 is about 1005.5908710803. The cubic root of 1011213 is about 100.3723782896.

Adding to 1011213 its reverse (3121101), we get a palindrome (4132314).

It can be divided in two parts, 101121 and 3, that added together give a square (101124 = 318²).

The spelling of 1011213 in words is "one million, eleven thousand, two hundred thirteen".