1311554201 has 2 divisors, whose sum is σ = 1311554202. Its totient is φ = 1311554200.

The previous prime is 1311554177. The next prime is 1311554221. The reversal of 1311554201 is 1024551131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1244396176 + 67158025 = 35276^2 + 8195^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311554201 - 2¹⁴ = 1311537817 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311554221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655777100 + 655777101.

It is an arithmetic number, because the mean of its divisors is an integer number (655777101).

Almost surely, 2^1311554201 is an apocalyptic number.

It is an amenable number.

1311554201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311554201 is an equidigital number, since it uses as much as digits as its factorization.

1311554201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1311554201 is about 36215.3862467322. The cubic root of 1311554201 is about 1094.6167284528.

The spelling of 1311554201 in words is "one billion, three hundred eleven million, five hundred fifty-four thousand, two hundred one".