213052403 has 2 divisors, whose sum is σ = 213052404. Its totient is φ = 213052402.

The previous prime is 213052391. The next prime is 213052409. The reversal of 213052403 is 304250312.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213052403 - 2⁴ = 213052387 is a prime.

It is not a weakly prime, because it can be changed into another prime (213052409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106526201 + 106526202.

It is an arithmetic number, because the mean of its divisors is an integer number (106526202).

Almost surely, 2^213052403 is an apocalyptic number.

213052403 is a deficient number, since it is larger than the sum of its proper divisors (1).

213052403 is an equidigital number, since it uses as much as digits as its factorization.

213052403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 213052403 is about 14596.3147061167. The cubic root of 213052403 is about 597.2582337993.

The spelling of 213052403 in words is "two hundred thirteen million, fifty-two thousand, four hundred three".