1031540340401 has 4 divisors (see below), whose sum is σ = 1092219183972. Its totient is φ = 970861496832.

The previous prime is 1031540340349. The next prime is 1031540340431. The reversal of 1031540340401 is 1040430451301.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 559131558001 + 472408782400 = 747751^2 + 687320^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031540340401 - 2²² = 1031536146097 is a prime.

It is a super-2 number, since 2×1031540340401² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031540340431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30339421760 + ... + 30339421793.

It is an arithmetic number, because the mean of its divisors is an integer number (273054795993).

Almost surely, 2^{1031540340401} is an apocalyptic number.

It is an amenable number.

1031540340401 is a deficient number, since it is larger than the sum of its proper divisors (60678843571).

1031540340401 is an equidigital number, since it uses as much as digits as its factorization.

1031540340401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60678843570.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 1031540340401 its reverse (1040430451301), we get a palindrome (2071970791702).

The spelling of 1031540340401 in words is "one trillion, thirty-one billion, five hundred forty million, three hundred forty thousand, four hundred one".