40401131101 has 2 divisors, whose sum is σ = 40401131102. Its totient is φ = 40401131100.

The previous prime is 40401131087. The next prime is 40401131123. The reversal of 40401131101 is 10113110404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40029605476 + 371525625 = 200074^2 + 19275^2 .

It is a cyclic number.

It is not a de Polignac number, because 40401131101 - 2²¹ = 40399033949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40401135101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20200565550 + 20200565551.

It is an arithmetic number, because the mean of its divisors is an integer number (20200565551).

Almost surely, 2^40401131101 is an apocalyptic number.

It is an amenable number.

40401131101 is a deficient number, since it is larger than the sum of its proper divisors (1).

40401131101 is an equidigital number, since it uses as much as digits as its factorization.

40401131101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 40401131101 its reverse (10113110404), we get a palindrome (50514241505).

The spelling of 40401131101 in words is "forty billion, four hundred one million, one hundred thirty-one thousand, one hundred one".