1000213131 has 8 divisors (see below), whose sum is σ = 1337333760. Its totient is φ = 664950632.

The previous prime is 1000213129. The next prime is 1000213133. The reversal of 1000213131 is 1313120001.

It is an interprime number because it is at equal distance from previous prime (1000213129) and next prime (1000213133).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1000213131 - 2¹ = 1000213129 is a prime.

It is a super-2 number, since 2×1000213131² = 2000852614849646322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1000213133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 463275 + ... + 465428.

It is an arithmetic number, because the mean of its divisors is an integer number (167166720).

Almost surely, 2^1000213131 is an apocalyptic number.

1000213131 is a deficient number, since it is larger than the sum of its proper divisors (337120629).

1000213131 is an equidigital number, since it uses as much as digits as its factorization.

1000213131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929065.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1000213131 is about 31626.1463191455. The cubic root of 1000213131 is about 1000.0710386201.

Adding to 1000213131 its reverse (1313120001), we get a palindrome (2313333132).

The spelling of 1000213131 in words is "one billion, two hundred thirteen thousand, one hundred thirty-one".