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23231293156 = 2237337465781
BaseRepresentation
bin10101101000101100…
…010110011011100100
32012222000202222011001
4111220230112123210
5340034202340111
614401115123044
71451456506441
oct255054263344
965860688131
1023231293156
119941506435
124604143484
132262c81c16
1411a54d89c8
1590e79b1c1
hex568b166e4

23231293156 has 24 divisors (see below), whose sum is σ = 41877528056. Its totient is φ = 11268149760.

The previous prime is 23231293153. The next prime is 23231293177. The reversal of 23231293156 is 65139213232.

It can be written as a sum of positive squares in 4 ways, for example, as 1116629056 + 22114664100 = 33416^2 + 148710^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (23231293153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183015 + ... + 282766.

Almost surely, 223231293156 is an apocalyptic number.

It is an amenable number.

23231293156 is a deficient number, since it is larger than the sum of its proper divisors (18646234900).

23231293156 is a wasteful number, since it uses less digits than its factorization.

23231293156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466159 (or 466157 counting only the distinct ones).

The product of its digits is 58320, while the sum is 37.

The spelling of 23231293156 in words is "twenty-three billion, two hundred thirty-one million, two hundred ninety-three thousand, one hundred fifty-six".

Divisors: 1 2 4 37 74 148 337 674 1348 12469 24938 49876 465781 931562 1863124 17233897 34467794 68935588 156968197 313936394 627872788 5807823289 11615646578 23231293156