1001567213 has 4 divisors (see below), whose sum is σ = 1007946780. Its totient is φ = 995187648.

The previous prime is 1001567209. The next prime is 1001567219. The reversal of 1001567213 is 3127651001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3127651001 = 79 ⋅39590519.

It can be written as a sum of positive squares in 2 ways, for example, as 634384969 + 367182244 = 25187^2 + 19162^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001567213 - 2² = 1001567209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001567219) 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, 3189548 + ... + 3189861.

It is an arithmetic number, because the mean of its divisors is an integer number (251986695).

Almost surely, 2^1001567213 is an apocalyptic number.

It is an amenable number.

1001567213 is a deficient number, since it is larger than the sum of its proper divisors (6379567).

1001567213 is an equidigital number, since it uses as much as digits as its factorization.

1001567213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6379566.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 1001567213 is about 31647.5467137660. The cubic root of 1001567213 is about 1000.5221316644.

The spelling of 1001567213 in words is "one billion, one million, five hundred sixty-seven thousand, two hundred thirteen".