1001312213 has 4 divisors (see below), whose sum is σ = 1092340608. Its totient is φ = 910283820.

The previous prime is 1001312201. The next prime is 1001312237. The reversal of 1001312213 is 3122131001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1001312213 - 2⁴ = 1001312197 is a prime.

It is a super-2 number, since 2×1001312213² = 2005252295805914738, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001312243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45514181 + ... + 45514202.

It is an arithmetic number, because the mean of its divisors is an integer number (273085152).

Almost surely, 2^1001312213 is an apocalyptic number.

It is an amenable number.

1001312213 is a deficient number, since it is larger than the sum of its proper divisors (91028395).

1001312213 is an equidigital number, since it uses as much as digits as its factorization.

1001312213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91028394.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1001312213 is about 31643.5177090032. The cubic root of 1001312213 is about 1000.4372131501.

Adding to 1001312213 its reverse (3122131001), we get a palindrome (4123443214).

It can be divided in two parts, 1001 and 312213, that multiplied together give a palindrome (312525213).

The spelling of 1001312213 in words is "one billion, one million, three hundred twelve thousand, two hundred thirteen".