1213911030 has 32 divisors (see below), whose sum is σ = 2922717024. Its totient is φ = 322672896.

The previous prime is 1213911011. The next prime is 1213911073. The reversal of 1213911030 is 301193121.

It is a junction number, because it is equal to n+sod(n) for n = 1213910988 and 1213911006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55249 + ... + 74028.

It is an arithmetic number, because the mean of its divisors is an integer number (91334907).

Almost surely, 2^1213911030 is an apocalyptic number.

1213911030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213911030 is an abundant number, since it is smaller than the sum of its proper divisors (1708805994).

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

1213911030 is a wasteful number, since it uses less digits than its factorization.

1213911030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129600.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 1213911030 is about 34841.2260117235. The cubic root of 1213911030 is about 1066.7491018104.

The spelling of 1213911030 in words is "one billion, two hundred thirteen million, nine hundred eleven thousand, thirty".