213023431403 has 2 divisors, whose sum is σ = 213023431404. Its totient is φ = 213023431402.

The previous prime is 213023431367. The next prime is 213023431441. The reversal of 213023431403 is 304134320312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213023431403 - 2¹² = 213023427307 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (213023431603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106511715701 + 106511715702.

It is an arithmetic number, because the mean of its divisors is an integer number (106511715702).

Almost surely, 2^213023431403 is an apocalyptic number.

213023431403 is a deficient number, since it is larger than the sum of its proper divisors (1).

213023431403 is an equidigital number, since it uses as much as digits as its factorization.

213023431403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 213023431403 its reverse (304134320312), we get a palindrome (517157751715).

The spelling of 213023431403 in words is "two hundred thirteen billion, twenty-three million, four hundred thirty-one thousand, four hundred three".