613211312000 has 128 divisors (see below), whose sum is σ = 1742396460480. Its totient is φ = 210243840000.

The previous prime is 613211311997. The next prime is 613211312009. The reversal of 613211312000 is 213112316.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×613211312000² (a number of 24 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613211312009) 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, 2625551 + ... + 2849550.

Almost surely, 2^613211312000 is an apocalyptic number.

It is an amenable number.

613211312000 is an abundant number, since it is smaller than the sum of its proper divisors (1129185148480).

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

613211312000 is an equidigital number, since it uses as much as digits as its factorization.

613211312000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5475137 (or 5475115 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 613211312000 its reverse (213112316), we get a palindrome (613424424316).

The spelling of 613211312000 in words is "six hundred thirteen billion, two hundred eleven million, three hundred twelve thousand".