13213402 has 8 divisors (see below), whose sum is σ = 19840212. Its totient is φ = 6600000.

The previous prime is 13213399. The next prime is 13213423. The reversal of 13213402 is 20431231.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13184161 + 29241 = 3631^2 + 171^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×13213402⁴ (a number of 30 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349 + ... + 5152.

Almost surely, 2^13213402 is an apocalyptic number.

13213402 is a deficient number, since it is larger than the sum of its proper divisors (6626810).

13213402 is a wasteful number, since it uses less digits than its factorization.

13213402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6704.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 13213402 is about 3635.0243465485. The cubic root of 13213402 is about 236.4131062942.

Adding to 13213402 its reverse (20431231), we get a palindrome (33644633).

The spelling of 13213402 in words is "thirteen million, two hundred thirteen thousand, four hundred two".