402111131 has 2 divisors, whose sum is σ = 402111132. Its totient is φ = 402111130.

The previous prime is 402111121. The next prime is 402111163. The reversal of 402111131 is 131111204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402111131 - 2¹⁸ = 401848987 is a prime.

It is a super-2 number, since 2×402111131² = 323386723348198322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (402111121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201055565 + 201055566.

It is an arithmetic number, because the mean of its divisors is an integer number (201055566).

Almost surely, 2^402111131 is an apocalyptic number.

402111131 is a deficient number, since it is larger than the sum of its proper divisors (1).

402111131 is an equidigital number, since it uses as much as digits as its factorization.

402111131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 402111131 is about 20052.7088195087. The cubic root of 402111131 is about 738.1002714548.

Adding to 402111131 its reverse (131111204), we get a palindrome (533222335).

The spelling of 402111131 in words is "four hundred two million, one hundred eleven thousand, one hundred thirty-one".