31816369485 has 20 divisors (see below), whose sum is σ = 57033788988. Its totient is φ = 16968730176.

The previous prime is 31816369391. The next prime is 31816369489. The reversal of 31816369485 is 58496361813.

31816369485 is a `hidden beast` number, since 318 + 163 + 6 + 94 + 85 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 24857306244 + 6959063241 = 157662^2 + 83421^2 .

It is not a de Polignac number, because 31816369485 - 2¹¹ = 31816367437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31816369489) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 39279064 + ... + 39279873.

Almost surely, 2^31816369485 is an apocalyptic number.

It is an amenable number.

31816369485 is a deficient number, since it is larger than the sum of its proper divisors (25217419503).

31816369485 is an equidigital number, since it uses as much as digits as its factorization.

31816369485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78558954 (or 78558945 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The spelling of 31816369485 in words is "thirty-one billion, eight hundred sixteen million, three hundred sixty-nine thousand, four hundred eighty-five".