423381653 has 2 divisors, whose sum is σ = 423381654. Its totient is φ = 423381652.

The previous prime is 423381599. The next prime is 423381661. The reversal of 423381653 is 356183324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 390181009 + 33200644 = 19753^2 + 5762^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423381653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423384653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211690826 + 211690827.

It is an arithmetic number, because the mean of its divisors is an integer number (211690827).

Almost surely, 2^423381653 is an apocalyptic number.

It is an amenable number.

423381653 is a deficient number, since it is larger than the sum of its proper divisors (1).

423381653 is an equidigital number, since it uses as much as digits as its factorization.

423381653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 35.

The square root of 423381653 is about 20576.2400112363. The cubic root of 423381653 is about 750.8917706473.

The spelling of 423381653 in words is "four hundred twenty-three million, three hundred eighty-one thousand, six hundred fifty-three".