31401413441 has 4 divisors (see below), whose sum is σ = 31416276612. Its totient is φ = 31386550272.

The previous prime is 31401413431. The next prime is 31401413443. The reversal of 31401413441 is 14431410413.

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 515108416 + 30886305025 = 22696^2 + 175745^2 .

It is a cyclic number.

It is not a de Polignac number, because 31401413441 - 2⁶ = 31401413377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31401413441.

It is not an unprimeable number, because it can be changed into a prime (31401413443) 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, 7428416 + ... + 7432641.

It is an arithmetic number, because the mean of its divisors is an integer number (7854069153).

Almost surely, 2^31401413441 is an apocalyptic number.

It is an amenable number.

31401413441 is a deficient number, since it is larger than the sum of its proper divisors (14863171).

31401413441 is a wasteful number, since it uses less digits than its factorization.

31401413441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14863170.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 31401413441 its reverse (14431410413), we get a palindrome (45832823854).

The spelling of 31401413441 in words is "thirty-one billion, four hundred one million, four hundred thirteen thousand, four hundred forty-one".