1231300349 has 2 divisors, whose sum is σ = 1231300350. Its totient is φ = 1231300348.

The previous prime is 1231300303. The next prime is 1231300363. The reversal of 1231300349 is 9430031321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1226260324 + 5040025 = 35018^2 + 2245^2 .

It is an emirp because it is prime and its reverse (9430031321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231300349 is a prime.

It is a super-2 number, since 2×1231300349² = 3032201098895043602, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231300549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615650174 + 615650175.

It is an arithmetic number, because the mean of its divisors is an integer number (615650175).

Almost surely, 2^1231300349 is an apocalyptic number.

It is an amenable number.

1231300349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231300349 is an equidigital number, since it uses as much as digits as its factorization.

1231300349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 1231300349 is about 35089.8895552551. The cubic root of 1231300349 is about 1071.8187105834.

The spelling of 1231300349 in words is "one billion, two hundred thirty-one million, three hundred thousand, three hundred forty-nine".