31316463228 has 24 divisors (see below), whose sum is σ = 73075781632. Its totient is φ = 10438244784.

The previous prime is 31316463203. The next prime is 31316463229. The reversal of 31316463228 is 82236461313.

It is a super-3 number, since 3×31316463228³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31316463229) 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, 193551 + ... + 316377.

Almost surely, 2^31316463228 is an apocalyptic number.

It is an amenable number.

31316463228 is an abundant number, since it is smaller than the sum of its proper divisors (41759318404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31316463228 is a wasteful number, since it uses less digits than its factorization.

31316463228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144081 (or 144079 counting only the distinct ones).

The product of its digits is 124416, while the sum is 39.

The spelling of 31316463228 in words is "thirty-one billion, three hundred sixteen million, four hundred sixty-three thousand, two hundred twenty-eight".