402243243131 has 4 divisors (see below), whose sum is σ = 425904610392. Its totient is φ = 378581875872.

The previous prime is 402243243121. The next prime is 402243243163. The reversal of 402243243131 is 131342342204.

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 402243243131 - 2¹⁴ = 402243226747 is a prime.

It is a super-2 number, since 2×402243243131² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 402243243094 and 402243243103.

It is not an unprimeable number, because it can be changed into a prime (402243243121) 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, 11830683605 + ... + 11830683638.

It is an arithmetic number, because the mean of its divisors is an integer number (106476152598).

Almost surely, 2^402243243131 is an apocalyptic number.

402243243131 is a deficient number, since it is larger than the sum of its proper divisors (23661367261).

402243243131 is a wasteful number, since it uses less digits than its factorization.

402243243131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23661367260.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 402243243131 its reverse (131342342204), we get a palindrome (533585585335).

The spelling of 402243243131 in words is "four hundred two billion, two hundred forty-three million, two hundred forty-three thousand, one hundred thirty-one".