31421344654654 has 4 divisors (see below), whose sum is σ = 47132016981984. Its totient is φ = 15710672327326.

The previous prime is 31421344654597. The next prime is 31421344654657. The reversal of 31421344654654 is 45645644312413.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31421344654657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7855336163662 + ... + 7855336163665.

It is an arithmetic number, because the mean of its divisors is an integer number (11783004245496).

Almost surely, 2^{31421344654654} is an apocalyptic number.

31421344654654 is a deficient number, since it is larger than the sum of its proper divisors (15710672327330).

31421344654654 is a wasteful number, since it uses less digits than its factorization.

31421344654654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15710672327329.

The product of its digits is 16588800, while the sum is 52.

The spelling of 31421344654654 in words is "thirty-one trillion, four hundred twenty-one billion, three hundred forty-four million, six hundred fifty-four thousand, six hundred fifty-four".