321012032130 has 96 divisors (see below), whose sum is σ = 848546747568. Its totient is φ = 84176755200.

The previous prime is 321012032057. The next prime is 321012032179. The reversal of 321012032130 is 31230210123.

321012032130 is a `hidden beast` number, since 321 + 0 + 1 + 20 + 321 + 3 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 61587852561 + 259424179569 = 248169^2 + 509337^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30634452 + ... + 30644928.

Almost surely, 2^321012032130 is an apocalyptic number.

321012032130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 321012032130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (424273373784).

321012032130 is an abundant number, since it is smaller than the sum of its proper divisors (527534715438).

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

321012032130 is a wasteful number, since it uses less digits than its factorization.

321012032130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16132 (or 16129 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 321012032130 its reverse (31230210123), we get a palindrome (352242242253).

The spelling of 321012032130 in words is "three hundred twenty-one billion, twelve million, thirty-two thousand, one hundred thirty".