31979883147 has 8 divisors (see below), whose sum is σ = 42762022800. Its totient is φ = 21258832800.

The previous prime is 31979883137. The next prime is 31979883157. The reversal of 31979883147 is 74138897913.

It is an interprime number because it is at equal distance from previous prime (31979883137) and next prime (31979883157).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31979883147 - 2⁶ = 31979883083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31979883137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15271104 + ... + 15273197.

It is an arithmetic number, because the mean of its divisors is an integer number (5345252850).

Almost surely, 2^31979883147 is an apocalyptic number.

31979883147 is a deficient number, since it is larger than the sum of its proper divisors (10782139653).

31979883147 is a wasteful number, since it uses less digits than its factorization.

31979883147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30544653.

The product of its digits is 9144576, while the sum is 60.

The spelling of 31979883147 in words is "thirty-one billion, nine hundred seventy-nine million, eight hundred eighty-three thousand, one hundred forty-seven".