47915171031 has 32 divisors (see below), whose sum is σ = 78749637120. Its totient is φ = 25235489664.

The previous prime is 47915171009. The next prime is 47915171053. The reversal of 47915171031 is 13017151974.

It is an interprime number because it is at equal distance from previous prime (47915171009) and next prime (47915171053).

It is not a de Polignac number, because 47915171031 - 2²³ = 47906782423 is a prime.

It is a super-2 number, since 2×47915171031² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47915171081) 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, 46741 + ... + 313073.

It is an arithmetic number, because the mean of its divisors is an integer number (2460926160).

Almost surely, 2^47915171031 is an apocalyptic number.

47915171031 is a deficient number, since it is larger than the sum of its proper divisors (30834466089).

47915171031 is a wasteful number, since it uses less digits than its factorization.

47915171031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267015.

The product of its (nonzero) digits is 26460, while the sum is 39.

The spelling of 47915171031 in words is "forty-seven billion, nine hundred fifteen million, one hundred seventy-one thousand, thirty-one".