31481143441 has 16 divisors (see below), whose sum is σ = 35845193088. Its totient is φ = 27368070400.

The previous prime is 31481143427. The next prime is 31481143483. The reversal of 31481143441 is 14434118413.

It is not a de Polignac number, because 31481143441 - 2²¹ = 31479046289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31481143397 and 31481143406.

It is not an unprimeable number, because it can be changed into a prime (31481146441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1181235 + ... + 1207591.

It is an arithmetic number, because the mean of its divisors is an integer number (2240324568).

Almost surely, 2^31481143441 is an apocalyptic number.

It is an amenable number.

31481143441 is a deficient number, since it is larger than the sum of its proper divisors (4364049647).

31481143441 is a wasteful number, since it uses less digits than its factorization.

31481143441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31112.

The product of its digits is 18432, while the sum is 34.

The spelling of 31481143441 in words is "thirty-one billion, four hundred eighty-one million, one hundred forty-three thousand, four hundred forty-one".