31450544247 has 4 divisors (see below), whose sum is σ = 41934059000. Its totient is φ = 20967029496.

The previous prime is 31450544201. The next prime is 31450544291. The reversal of 31450544247 is 74244505413.

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

It is not a de Polignac number, because 31450544247 - 2¹² = 31450540151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31450544647) 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, 5241757372 + ... + 5241757377.

It is an arithmetic number, because the mean of its divisors is an integer number (10483514750).

Almost surely, 2^31450544247 is an apocalyptic number.

31450544247 is a deficient number, since it is larger than the sum of its proper divisors (10483514753).

31450544247 is a wasteful number, since it uses less digits than its factorization.

31450544247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10483514752.

The product of its (nonzero) digits is 268800, while the sum is 39.

The spelling of 31450544247 in words is "thirty-one billion, four hundred fifty million, five hundred forty-four thousand, two hundred forty-seven".