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31022020023 = 319154139651
BaseRepresentation
bin11100111001000011…
…100111010110110111
32222001222101220021120
4130321003213112313
51002013114120043
622130141315023
72145516551031
oct347103472667
988058356246
1031022020023
111217a137885
126019265a73
132c05041c87
141704088c51
15c18709983
hex7390e75b7

31022020023 has 8 divisors (see below), whose sum is σ = 41579252736. Its totient is φ = 20573067000.

The previous prime is 31022020021. The next prime is 31022020027. The reversal of 31022020023 is 32002022013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31022020023 - 21 = 31022020021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31022019984 and 31022020011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31022020021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27069253 + ... + 27070398.

It is an arithmetic number, because the mean of its divisors is an integer number (5197406592).

Almost surely, 231022020023 is an apocalyptic number.

31022020023 is a deficient number, since it is larger than the sum of its proper divisors (10557232713).

31022020023 is a wasteful number, since it uses less digits than its factorization.

31022020023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54139845.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 31022020023 its reverse (32002022013), we get a palindrome (63024042036).

The spelling of 31022020023 in words is "thirty-one billion, twenty-two million, twenty thousand, twenty-three".

Divisors: 1 3 191 573 54139651 162418953 10340673341 31022020023