31445141247 has 32 divisors (see below), whose sum is σ = 53120007360. Its totient is φ = 18212567040.

The previous prime is 31445141243. The next prime is 31445141261. The reversal of 31445141247 is 74214154413.

31445141247 is a `hidden beast` number, since 3 + 14 + 4 + 514 + 124 + 7 = 666.

It is not a de Polignac number, because 31445141247 - 2² = 31445141243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31445141243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2628954 + ... + 2640887.

It is an arithmetic number, because the mean of its divisors is an integer number (1660000230).

Almost surely, 2^31445141247 is an apocalyptic number.

31445141247 is a deficient number, since it is larger than the sum of its proper divisors (21674866113).

31445141247 is a wasteful number, since it uses less digits than its factorization.

31445141247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5269880 (or 5269874 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The spelling of 31445141247 in words is "thirty-one billion, four hundred forty-five million, one hundred forty-one thousand, two hundred forty-seven".