402240652311 has 4 divisors (see below), whose sum is σ = 536320869752. Its totient is φ = 268160434872.

The previous prime is 402240652273. The next prime is 402240652327. The reversal of 402240652311 is 113256042204.

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

It is not a de Polignac number, because 402240652311 - 2⁷ = 402240652183 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 (402240652381) 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, 67040108716 + ... + 67040108721.

It is an arithmetic number, because the mean of its divisors is an integer number (134080217438).

Almost surely, 2^402240652311 is an apocalyptic number.

402240652311 is a deficient number, since it is larger than the sum of its proper divisors (134080217441).

402240652311 is a wasteful number, since it uses less digits than its factorization.

402240652311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134080217440.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 402240652311 its reverse (113256042204), we get a palindrome (515496694515).

The spelling of 402240652311 in words is "four hundred two billion, two hundred forty million, six hundred fifty-two thousand, three hundred eleven".