1213000531 has 2 divisors, whose sum is σ = 1213000532. Its totient is φ = 1213000530.

The previous prime is 1213000499. The next prime is 1213000553. The reversal of 1213000531 is 1350003121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1213000531 - 2⁵ = 1213000499 is a prime.

It is a super-2 number, since 2×1213000531² = 2942740576412563922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1213000231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606500265 + 606500266.

It is an arithmetic number, because the mean of its divisors is an integer number (606500266).

Almost surely, 2^1213000531 is an apocalyptic number.

1213000531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213000531 is an equidigital number, since it uses as much as digits as its factorization.

1213000531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 1213000531 is about 34828.1571576792. The cubic root of 1213000531 is about 1066.4823285726.

Adding to 1213000531 its reverse (1350003121), we get a palindrome (2563003652).

The spelling of 1213000531 in words is "one billion, two hundred thirteen million, five hundred thirty-one", and thus it is an aban number.