30712540120 has 64 divisors (see below), whose sum is σ = 72781804800. Its totient is φ = 11631784320.

The previous prime is 30712540081. The next prime is 30712540123. The reversal of 30712540120 is 2104521703.

It is a happy number.

It is a super-2 number, since 2×30712540120² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30712540123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1438725 + ... + 1459915.

It is an arithmetic number, because the mean of its divisors is an integer number (1137215700).

Almost surely, 2^30712540120 is an apocalyptic number.

It is an amenable number.

30712540120 is an abundant number, since it is smaller than the sum of its proper divisors (42069264680).

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

30712540120 is a wasteful number, since it uses less digits than its factorization.

30712540120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23128 (or 23124 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The spelling of 30712540120 in words is "thirty billion, seven hundred twelve million, five hundred forty thousand, one hundred twenty".