213453623 has 2 divisors, whose sum is σ = 213453624. Its totient is φ = 213453622.

The previous prime is 213453613. The next prime is 213453661. The reversal of 213453623 is 326354312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213453623 - 2¹⁸ = 213191479 is a prime.

It is a super-2 number, since 2×213453623² = 91124898343652258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213453613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106726811 + 106726812.

It is an arithmetic number, because the mean of its divisors is an integer number (106726812).

Almost surely, 2^213453623 is an apocalyptic number.

213453623 is a deficient number, since it is larger than the sum of its proper divisors (1).

213453623 is an equidigital number, since it uses as much as digits as its factorization.

213453623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 29.

The square root of 213453623 is about 14610.0521217414. The cubic root of 213453623 is about 597.6329173318.

The spelling of 213453623 in words is "two hundred thirteen million, four hundred fifty-three thousand, six hundred twenty-three".