1213031300 has 54 divisors (see below), whose sum is σ = 2850376158. Its totient is φ = 447882240.

The previous prime is 1213031297. The next prime is 1213031317. The reversal of 1213031300 is 31303121.

It can be written as a sum of positive squares in 9 ways, for example, as 662753536 + 550277764 = 25744^2 + 23458^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 18989 + ... + 52788.

Almost surely, 2^1213031300 is an apocalyptic number.

1213031300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213031300 is an abundant number, since it is smaller than the sum of its proper divisors (1637344858).

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

1213031300 is a wasteful number, since it uses less digits than its factorization.

1213031300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71817 (or 71797 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 1213031300 is about 34828.5988808048. The cubic root of 1213031300 is about 1066.4913459683.

Adding to 1213031300 its reverse (31303121), we get a palindrome (1244334421).

The spelling of 1213031300 in words is "one billion, two hundred thirteen million, thirty-one thousand, three hundred".