213103021032 has 72 divisors (see below), whose sum is σ = 634392455970. Its totient is φ = 64576670400.

The previous prime is 213103021013. The next prime is 213103021037. The reversal of 213103021032 is 230120301312.

213103021032 is a `hidden beast` number, since 21 + 310 + 302 + 1 + 0 + 32 = 666.

It can be written as a sum of positive squares in only one way, i.e., 188656447716 + 24446573316 = 434346^2 + 156354^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a junction number, because it is equal to n+sod(n) for n = 213103020996 and 213103021014.

It is not an unprimeable number, because it can be changed into a prime (213103021037) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12221719 + ... + 12239142.

Almost surely, 2^213103021032 is an apocalyptic number.

213103021032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

213103021032 is an abundant number, since it is smaller than the sum of its proper divisors (421289434938).

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

213103021032 is a wasteful number, since it uses less digits than its factorization.

213103021032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24460895 (or 24460877 counting only the distinct ones).

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

Adding to 213103021032 its reverse (230120301312), we get a palindrome (443223322344).

The spelling of 213103021032 in words is "two hundred thirteen billion, one hundred three million, twenty-one thousand, thirty-two".