402013361 has 2 divisors, whose sum is σ = 402013362. Its totient is φ = 402013360.

The previous prime is 402013357. The next prime is 402013373. The reversal of 402013361 is 163310204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 391248400 + 10764961 = 19780^2 + 3281^2 .

It is a cyclic number.

It is not a de Polignac number, because 402013361 - 2² = 402013357 is a prime.

It is a super-2 number, since 2×402013361² = 323229484845032642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (402013061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201006680 + 201006681.

It is an arithmetic number, because the mean of its divisors is an integer number (201006681).

Almost surely, 2^402013361 is an apocalyptic number.

It is an amenable number.

402013361 is a deficient number, since it is larger than the sum of its proper divisors (1).

402013361 is an equidigital number, since it uses as much as digits as its factorization.

402013361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 402013361 is about 20050.2708460509. The cubic root of 402013361 is about 738.0404456111.

Adding to 402013361 its reverse (163310204), we get a palindrome (565323565).

The spelling of 402013361 in words is "four hundred two million, thirteen thousand, three hundred sixty-one".