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23012310140 = 2254783929179
BaseRepresentation
bin10101011011101000…
…111111110001111100
32012101202201110220222
4111123220333301330
5334112122411030
614323253400512
71443160260131
oct253350776174
965352643828
1023012310140
119839938236
124562939138
1322297ac381
1411843b4588
158ea4423e5
hex55ba3fc7c

23012310140 has 48 divisors (see below), whose sum is σ = 49414579200. Its totient is φ = 8998028352.

The previous prime is 23012310077. The next prime is 23012310149. The reversal of 23012310140 is 4101321032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23012310149) 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, 774071 + ... + 803249.

It is an arithmetic number, because the mean of its divisors is an integer number (1029470400).

Almost surely, 223012310140 is an apocalyptic number.

23012310140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23012310140 is an abundant number, since it is smaller than the sum of its proper divisors (26402269060).

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

23012310140 is a wasteful number, since it uses less digits than its factorization.

23012310140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30074 (or 30072 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 23012310140 its reverse (4101321032), we get a palindrome (27113631172).

The spelling of 23012310140 in words is "twenty-three billion, twelve million, three hundred ten thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 47 94 188 235 470 839 940 1678 3356 4195 8390 16780 29179 39433 58358 78866 116716 145895 157732 197165 291790 394330 583580 788660 1371413 2742826 5485652 6857065 13714130 24481181 27428260 48962362 97924724 122405905 244811810 489623620 1150615507 2301231014 4602462028 5753077535 11506155070 23012310140