1213100364 has 48 divisors (see below), whose sum is σ = 3237317888. Its totient is φ = 346344768.

The previous prime is 1213100347. The next prime is 1213100381. The reversal of 1213100364 is 4630013121.

It is an interprime number because it is at equal distance from previous prime (1213100347) and next prime (1213100381).

It is a super-2 number, since 2×1213100364² = 2943224986273864992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1213100364.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129627 + ... + 138669.

Almost surely, 2^1213100364 is an apocalyptic number.

1213100364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1213100364 is an abundant number, since it is smaller than the sum of its proper divisors (2024217524).

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

1213100364 is a wasteful number, since it uses less digits than its factorization.

1213100364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10654 (or 10652 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1213100364 is about 34829.5903507348. The cubic root of 1213100364 is about 1066.5115858309.

Adding to 1213100364 its reverse (4630013121), we get a palindrome (5843113485).

The spelling of 1213100364 in words is "one billion, two hundred thirteen million, one hundred thousand, three hundred sixty-four".