213030120440 has 32 divisors (see below), whose sum is σ = 479344204080. Its totient is φ = 85207348992.

The previous prime is 213030120403. The next prime is 213030120463. The reversal of 213030120440 is 44021030312.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 639539 + ... + 913821.

Almost surely, 2^213030120440 is an apocalyptic number.

213030120440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213030120440 is an abundant number, since it is smaller than the sum of its proper divisors (266314083640).

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

213030120440 is a wasteful number, since it uses less digits than its factorization.

213030120440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293711 (or 293707 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 213030120440 its reverse (44021030312), we get a palindrome (257051150752).

The spelling of 213030120440 in words is "two hundred thirteen billion, thirty million, one hundred twenty thousand, four hundred forty".