1213948711 has 2 divisors, whose sum is σ = 1213948712. Its totient is φ = 1213948710.

The previous prime is 1213948663. The next prime is 1213948753. The reversal of 1213948711 is 1178493121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1213948711 - 2⁷ = 1213948583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213948511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606974355 + 606974356.

It is an arithmetic number, because the mean of its divisors is an integer number (606974356).

Almost surely, 2^1213948711 is an apocalyptic number.

1213948711 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213948711 is an equidigital number, since it uses as much as digits as its factorization.

1213948711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 37.

The square root of 1213948711 is about 34841.7667605993. The cubic root of 1213948711 is about 1066.7601393456.

The spelling of 1213948711 in words is "one billion, two hundred thirteen million, nine hundred forty-eight thousand, seven hundred eleven".