1401023213 has 2 divisors, whose sum is σ = 1401023214. Its totient is φ = 1401023212.

The previous prime is 1401023179. The next prime is 1401023251. The reversal of 1401023213 is 3123201041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1374778084 + 26245129 = 37078^2 + 5123^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401023213 - 2⁸ = 1401022957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1401023191 and 1401023200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401023713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700511606 + 700511607.

It is an arithmetic number, because the mean of its divisors is an integer number (700511607).

Almost surely, 2^1401023213 is an apocalyptic number.

It is an amenable number.

1401023213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401023213 is an equidigital number, since it uses as much as digits as its factorization.

1401023213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1401023213 is about 37430.2446291766. The cubic root of 1401023213 is about 1118.9614131095.

Adding to 1401023213 its reverse (3123201041), we get a palindrome (4524224254).

The spelling of 1401023213 in words is "one billion, four hundred one million, twenty-three thousand, two hundred thirteen".