402245311 has 4 divisors (see below), whose sum is σ = 433187272. Its totient is φ = 371303352.

The previous prime is 402245299. The next prime is 402245339. The reversal of 402245311 is 113542204.

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

It is a cyclic number.

It is not a de Polignac number, because 402245311 - 2²³ = 393856703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402245351) 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, 15470961 + ... + 15470986.

It is an arithmetic number, because the mean of its divisors is an integer number (108296818).

Almost surely, 2^402245311 is an apocalyptic number.

402245311 is a deficient number, since it is larger than the sum of its proper divisors (30941961).

402245311 is a wasteful number, since it uses less digits than its factorization.

402245311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30941960.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 402245311 is about 20056.0542231018. The cubic root of 402245311 is about 738.1823609344.

Adding to 402245311 its reverse (113542204), we get a palindrome (515787515).

The spelling of 402245311 in words is "four hundred two million, two hundred forty-five thousand, three hundred eleven".