1213405320930 has 64 divisors (see below), whose sum is σ = 3254401535616. Its totient is φ = 286984256000.

The previous prime is 1213405320887. The next prime is 1213405320931. The reversal of 1213405320930 is 390235043121.

It is a super-2 number, since 2×1213405320930² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 1213405320891 and 1213405320900.

It is not an unprimeable number, because it can be changed into a prime (1213405320931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44827761 + ... + 44854820.

It is an arithmetic number, because the mean of its divisors is an integer number (50850023994).

Almost surely, 2^{1213405320930} is an apocalyptic number.

1213405320930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213405320930 is an abundant number, since it is smaller than the sum of its proper divisors (2040996214686).

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

1213405320930 is a wasteful number, since it uses less digits than its factorization.

1213405320930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89682643.

The product of its (nonzero) digits is 19440, while the sum is 33.

The spelling of 1213405320930 in words is "one trillion, two hundred thirteen billion, four hundred five million, three hundred twenty thousand, nine hundred thirty".