20110400131 has 2 divisors, whose sum is σ = 20110400132. Its totient is φ = 20110400130.

The previous prime is 20110400027. The next prime is 20110400137. The reversal of 20110400131 is 13100401102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20110400131 - 2¹⁵ = 20110367363 is a prime.

It is a super-2 number, since 2×20110400131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20110400137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055200065 + 10055200066.

It is an arithmetic number, because the mean of its divisors is an integer number (10055200066).

Almost surely, 2^20110400131 is an apocalyptic number.

20110400131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20110400131 is an equidigital number, since it uses as much as digits as its factorization.

20110400131 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 13.

Adding to 20110400131 its reverse (13100401102), we get a palindrome (33210801233).

The spelling of 20110400131 in words is "twenty billion, one hundred ten million, four hundred thousand, one hundred thirty-one".