31400015513441 has 4 divisors (see below), whose sum is σ = 31448101295892. Its totient is φ = 31351929730992.

The previous prime is 31400015513221. The next prime is 31400015513453. The reversal of 31400015513441 is 14431551000413.

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 10641922742416 + 20758092771025 = 3262196^2 + 4556105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31400015513441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31400015513398 and 31400015513407.

It is not an unprimeable number, because it can be changed into a prime (31400015510441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24042890246 + ... + 24042891551.

It is an arithmetic number, because the mean of its divisors is an integer number (7862025323973).

Almost surely, 2^{31400015513441} is an apocalyptic number.

It is an amenable number.

31400015513441 is a deficient number, since it is larger than the sum of its proper divisors (48085782451).

31400015513441 is an equidigital number, since it uses as much as digits as its factorization.

31400015513441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48085782450.

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 31400015513441 its reverse (14431551000413), we get a palindrome (45831566513854).

The spelling of 31400015513441 in words is "thirty-one trillion, four hundred billion, fifteen million, five hundred thirteen thousand, four hundred forty-one".