31474718859 has 4 divisors (see below), whose sum is σ = 41966291816. Its totient is φ = 20983145904.

The previous prime is 31474718839. The next prime is 31474718861. The reversal of 31474718859 is 95881747413.

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

It is not a de Polignac number, because 31474718859 - 2⁹ = 31474718347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31474718799 and 31474718808.

It is not an unprimeable number, because it can be changed into a prime (31474718819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5245786474 + ... + 5245786479.

It is an arithmetic number, because the mean of its divisors is an integer number (10491572954).

Almost surely, 2^31474718859 is an apocalyptic number.

31474718859 is a deficient number, since it is larger than the sum of its proper divisors (10491572957).

31474718859 is a wasteful number, since it uses less digits than its factorization.

31474718859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10491572956.

The product of its digits is 6773760, while the sum is 57.

The spelling of 31474718859 in words is "thirty-one billion, four hundred seventy-four million, seven hundred eighteen thousand, eight hundred fifty-nine".