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23154245031 = 3433148711987
BaseRepresentation
bin10101100100000110…
…011011110110100111
32012202122210111222210
4111210012123312213
5334404441320111
614345323454503
71446532556361
oct254406336647
965678714883
1023154245031
119901a70aa5
1245a2387433
132250016308
14119919dd31
15907b2c0a6
hex56419bda7

23154245031 has 16 divisors (see below), whose sum is σ = 30967017984. Its totient is φ = 15388873344.

The previous prime is 23154245027. The next prime is 23154245069. The reversal of 23154245031 is 13054245132.

It is not a de Polignac number, because 23154245031 - 22 = 23154245027 is a prime.

It is a super-2 number, since 2×231542450312 (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23154245031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23154245071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1925620 + ... + 1937606.

It is an arithmetic number, because the mean of its divisors is an integer number (1935438624).

Almost surely, 223154245031 is an apocalyptic number.

23154245031 is a deficient number, since it is larger than the sum of its proper divisors (7812772953).

23154245031 is a wasteful number, since it uses less digits than its factorization.

23154245031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13910.

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 23154245031 in words is "twenty-three billion, one hundred fifty-four million, two hundred forty-five thousand, thirty-one".

Divisors: 1 3 433 1299 1487 4461 11987 35961 643871 1931613 5190371 15571113 17824669 53474007 7718081677 23154245031