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23071012031431 = 713347730627103
BaseRepresentation
bin1010011111011101000110…
…11110100000101111000111
310000200120022111101202010001
411033232203132200233013
511010443413040001211
6121022402051542131
74600553120416420
oct517564336405707
9100616274352101
1023071012031431
1173953a7916aa1
1227073972ba947
13cb4782b1b840
1459a90032a647
152a01e3996ac1
hex14fba37a0bc7

23071012031431 has 16 divisors (see below), whose sum is σ = 28476922005504. Its totient is φ = 18201382365024.

The previous prime is 23071012031401. The next prime is 23071012031437. The reversal of 23071012031431 is 13413021017032.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-23071012031431 is a prime.

It is a super-2 number, since 2×230710120314312 (a number of 28 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 23071012031431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23071012031437) 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, 365281975 + ... + 365345128.

It is an arithmetic number, because the mean of its divisors is an integer number (1779807625344).

Almost surely, 223071012031431 is an apocalyptic number.

23071012031431 is a deficient number, since it is larger than the sum of its proper divisors (5405909974073).

23071012031431 is a wasteful number, since it uses less digits than its factorization.

23071012031431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730627470.

The product of its (nonzero) digits is 3024, while the sum is 28.

Adding to 23071012031431 its reverse (13413021017032), we get a palindrome (36484033048463).

The spelling of 23071012031431 in words is "twenty-three trillion, seventy-one billion, twelve million, thirty-one thousand, four hundred thirty-one".

Divisors: 1 7 13 91 347 2429 4511 31577 730627103 5114389721 9498152339 66487066373 253527604741 1774693233187 3295858861633 23071012031431