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423223212421 = 31233437313399
BaseRepresentation
bin1100010100010100001…
…00011011100110000101
31111110102011010210110101
412022022010123212011
523413230120244141
6522232010124101
742401602643452
oct6121204334605
91443364123411
10423223212421
11153540519639
126a034720631
1330ba9a21159
14166ac596829
15b0205ea531
hex628a11b985

423223212421 has 16 divisors (see below), whose sum is σ = 438883660800. Its totient is φ = 407689349760.

The previous prime is 423223212409. The next prime is 423223212439. The reversal of 423223212421 is 124212322324.

It is a cyclic number.

It is not a de Polignac number, because 423223212421 - 217 = 423223081349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 423223212421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423223212521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31579480 + ... + 31592878.

It is an arithmetic number, because the mean of its divisors is an integer number (27430228800).

Almost surely, 2423223212421 is an apocalyptic number.

It is an amenable number.

423223212421 is a deficient number, since it is larger than the sum of its proper divisors (15660448379).

423223212421 is a wasteful number, since it uses less digits than its factorization.

423223212421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18036.

The product of its digits is 9216, while the sum is 28.

Adding to 423223212421 its reverse (124212322324), we get a palindrome (547435534745).

The spelling of 423223212421 in words is "four hundred twenty-three billion, two hundred twenty-three million, two hundred twelve thousand, four hundred twenty-one".

Divisors: 1 31 233 4373 7223 13399 135563 415369 1018909 3121967 31586179 58593827 96780977 1816408637 13652361691 423223212421