1213034231 has 2 divisors, whose sum is σ = 1213034232. Its totient is φ = 1213034230.

The previous prime is 1213034203. The next prime is 1213034261. The reversal of 1213034231 is 1324303121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213034231 is a prime.

It is a super-2 number, since 2×1213034231² = 2942904091155522722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213034261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606517115 + 606517116.

It is an arithmetic number, because the mean of its divisors is an integer number (606517116).

Almost surely, 2^1213034231 is an apocalyptic number.

1213034231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213034231 is an equidigital number, since it uses as much as digits as its factorization.

1213034231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1213034231 is about 34828.6409582688. The cubic root of 1213034231 is about 1066.4922049414.

Adding to 1213034231 its reverse (1324303121), we get a palindrome (2537337352).

The spelling of 1213034231 in words is "one billion, two hundred thirteen million, thirty-four thousand, two hundred thirty-one".