1213410620 has 24 divisors (see below), whose sum is σ = 2596243104. Its totient is φ = 476206016.

The previous prime is 1213410617. The next prime is 1213410629. The reversal of 1213410620 is 260143121.

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

It is a junction number, because it is equal to n+sod(n) for n = 1213410592 and 1213410601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213410629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571304 + ... + 573423.

It is an arithmetic number, because the mean of its divisors is an integer number (108176796).

Almost surely, 2^1213410620 is an apocalyptic number.

1213410620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213410620 is an abundant number, since it is smaller than the sum of its proper divisors (1382832484).

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

1213410620 is a wasteful number, since it uses less digits than its factorization.

1213410620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144789 (or 1144787 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1213410620 is about 34834.0439799918. The cubic root of 1213410620 is about 1066.6024998293.

Adding to 1213410620 its reverse (260143121), we get a palindrome (1473553741).

The spelling of 1213410620 in words is "one billion, two hundred thirteen million, four hundred ten thousand, six hundred twenty".