403020823 has 2 divisors, whose sum is σ = 403020824. Its totient is φ = 403020822.

The previous prime is 403020767. The next prime is 403020847. The reversal of 403020823 is 328020304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 403020823 - 2²¹ = 400923671 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 403020794 and 403020803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (403020883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201510411 + 201510412.

It is an arithmetic number, because the mean of its divisors is an integer number (201510412).

Almost surely, 2^403020823 is an apocalyptic number.

403020823 is a deficient number, since it is larger than the sum of its proper divisors (1).

403020823 is an equidigital number, since it uses as much as digits as its factorization.

403020823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 403020823 is about 20075.3785269419. The cubic root of 403020823 is about 738.6564512122.

The spelling of 403020823 in words is "four hundred three million, twenty thousand, eight hundred twenty-three".