30971128062 has 40 divisors (see below), whose sum is σ = 72261699336. Its totient is φ = 8848889616.

The previous prime is 30971128061. The next prime is 30971128091. The reversal of 30971128062 is 26082117903.

It is a self number, because there is not a number n which added to its sum of digits gives 30971128062.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30971128061) 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, 1060533 + ... + 1089344.

Almost surely, 2^30971128062 is an apocalyptic number.

30971128062 is an abundant number, since it is smaller than the sum of its proper divisors (41290571274).

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

30971128062 is an equidigital number, since it uses as much as digits as its factorization.

30971128062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149910 (or 2149889 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 30971128062 in words is "thirty billion, nine hundred seventy-one million, one hundred twenty-eight thousand, sixty-two".