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1213230004 = 227250912161
BaseRepresentation
bin100100001010000…
…0110101110110100
310010112220110200121
41020110012232310
54441041330004
6320215421324
742031166500
oct11024065664
93115813617
101213230004
11572922728
1229a384844
1316447729c
14b71b5300
15717a0854
hex48506bb4

1213230004 has 36 divisors (see below), whose sum is σ = 2474845380. Its totient is φ = 518891520.

The previous prime is 1213229999. The next prime is 1213230017. The reversal of 1213230004 is 4000323121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 642115600 + 571114404 = 25340^2 + 23898^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1213230004.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 93684 + ... + 105844.

It is an arithmetic number, because the mean of its divisors is an integer number (68745705).

Almost surely, 21213230004 is an apocalyptic number.

1213230004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1213230004 is an abundant number, since it is smaller than the sum of its proper divisors (1261615376).

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

1213230004 is a wasteful number, since it uses less digits than its factorization.

1213230004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12688 (or 12679 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1213230004 is about 34831.4513622387. The cubic root of 1213230004 is about 1066.5495759926.

Adding to 1213230004 its reverse (4000323121), we get a palindrome (5213553125).

The spelling of 1213230004 in words is "one billion, two hundred thirteen million, two hundred thirty thousand, four".