31428600818 has 8 divisors (see below), whose sum is σ = 47628910812. Its totient is φ = 15552297216.

The previous prime is 31428600817. The next prime is 31428600829. The reversal of 31428600818 is 81800682413.

It can be written as a sum of positive squares in 2 ways, for example, as 28458677809 + 2969923009 = 168697^2 + 54497^2 .

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

It is not an unprimeable number, because it can be changed into a prime (31428600811) 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, 81001355 + ... + 81001742.

Almost surely, 2^31428600818 is an apocalyptic number.

31428600818 is a deficient number, since it is larger than the sum of its proper divisors (16200309994).

31428600818 is a wasteful number, since it uses less digits than its factorization.

31428600818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162003196.

The product of its (nonzero) digits is 73728, while the sum is 41.

The spelling of 31428600818 in words is "thirty-one billion, four hundred twenty-eight million, six hundred thousand, eight hundred eighteen".