1213031867 has 2 divisors, whose sum is σ = 1213031868. Its totient is φ = 1213031866.

The previous prime is 1213031761. The next prime is 1213031873. The reversal of 1213031867 is 7681303121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1213031867 - 2¹⁶ = 1212966331 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213031887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606515933 + 606515934.

It is an arithmetic number, because the mean of its divisors is an integer number (606515934).

Almost surely, 2^1213031867 is an apocalyptic number.

1213031867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213031867 is an equidigital number, since it uses as much as digits as its factorization.

1213031867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1213031867 is about 34828.6070206662. The cubic root of 1213031867 is about 1066.4915121362.

Adding to 1213031867 its reverse (7681303121), we get a palindrome (8894334988).

The spelling of 1213031867 in words is "one billion, two hundred thirteen million, thirty-one thousand, eight hundred sixty-seven".