318243426901 has 2 divisors, whose sum is σ = 318243426902. Its totient is φ = 318243426900.

The previous prime is 318243426871. The next prime is 318243426953. The reversal of 318243426901 is 109624342813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 316462502500 + 1780924401 = 562550^2 + 42201^2 .

It is a cyclic number.

It is not a de Polignac number, because 318243426901 - 2⁵ = 318243426869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318243426961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159121713450 + 159121713451.

It is an arithmetic number, because the mean of its divisors is an integer number (159121713451).

Almost surely, 2^318243426901 is an apocalyptic number.

It is an amenable number.

318243426901 is a deficient number, since it is larger than the sum of its proper divisors (1).

318243426901 is an equidigital number, since it uses as much as digits as its factorization.

318243426901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 318243426901 in words is "three hundred eighteen billion, two hundred forty-three million, four hundred twenty-six thousand, nine hundred one".