1211131319 has 2 divisors, whose sum is σ = 1211131320. Its totient is φ = 1211131318.

The previous prime is 1211131301. The next prime is 1211131333. The reversal of 1211131319 is 9131311121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1211131319 - 2¹² = 1211127223 is a prime.

It is a super-2 number, since 2×1211131319² = 2933678143725359522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211131294 and 1211131303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211131399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605565659 + 605565660.

It is an arithmetic number, because the mean of its divisors is an integer number (605565660).

Almost surely, 2^1211131319 is an apocalyptic number.

1211131319 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211131319 is an equidigital number, since it uses as much as digits as its factorization.

1211131319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162, while the sum is 23.

The square root of 1211131319 is about 34801.3120298646. The cubic root of 1211131319 is about 1065.9342369145.

The spelling of 1211131319 in words is "one billion, two hundred eleven million, one hundred thirty-one thousand, three hundred nineteen".