31475673147 has 8 divisors (see below), whose sum is σ = 41968744720. Its totient is φ = 20983191840.

The previous prime is 31475673137. The next prime is 31475673149. The reversal of 31475673147 is 74137657413.

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

It is not a de Polignac number, because 31475673147 - 2¹² = 31475669051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31475673096 and 31475673105.

It is not an unprimeable number, because it can be changed into a prime (31475673149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2872 + ... + 250917.

It is an arithmetic number, because the mean of its divisors is an integer number (5246093090).

Almost surely, 2^31475673147 is an apocalyptic number.

31475673147 is a deficient number, since it is larger than the sum of its proper divisors (10493071573).

31475673147 is a wasteful number, since it uses less digits than its factorization.

31475673147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295133.

The product of its digits is 1481760, while the sum is 48.

The spelling of 31475673147 in words is "thirty-one billion, four hundred seventy-five million, six hundred seventy-three thousand, one hundred forty-seven".