1401001213 has 4 divisors (see below), whose sum is σ = 1423968508. Its totient is φ = 1378033920.

The previous prime is 1401001207. The next prime is 1401001219. The reversal of 1401001213 is 3121001041.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1401001207) and next prime (1401001219).

It can be written as a sum of positive squares in 2 ways, for example, as 808662969 + 592338244 = 28437^2 + 24338^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1401001213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1401001193 and 1401001202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401001219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11483556 + ... + 11483677.

It is an arithmetic number, because the mean of its divisors is an integer number (355992127).

Almost surely, 2^1401001213 is an apocalyptic number.

It is an amenable number.

1401001213 is a deficient number, since it is larger than the sum of its proper divisors (22967295).

1401001213 is an equidigital number, since it uses as much as digits as its factorization.

1401001213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22967294.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1401001213 is about 37429.9507480306. The cubic root of 1401001213 is about 1118.9555561330.

Adding to 1401001213 its reverse (3121001041), we get a palindrome (4522002254).

The spelling of 1401001213 in words is "one billion, four hundred one million, one thousand, two hundred thirteen".