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123031562053 = 1729915127271
BaseRepresentation
bin111001010010101000…
…0001010011101000101
3102202120021120220211111
41302211100022131011
54003432034441203
6132304145205021
711613560010511
oct1624520123505
9382507526744
10123031562053
11481a5122604
121ba17030771
13b7a929c87a
145d51c07141
1533011d126d
hex1ca540a745

123031562053 has 16 divisors (see below), whose sum is σ = 134780405760. Its totient is φ = 111785184000.

The previous prime is 123031562041. The next prime is 123031562131. The reversal of 123031562053 is 350265130321.

It is a cyclic number.

It is not a de Polignac number, because 123031562053 - 25 = 123031562021 is a prime.

It is a super-2 number, since 2×1230315620532 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123031562453) 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, 4497808 + ... + 4525078.

It is an arithmetic number, because the mean of its divisors is an integer number (8423775360).

Almost surely, 2123031562053 is an apocalyptic number.

It is an amenable number.

123031562053 is a deficient number, since it is larger than the sum of its proper divisors (11748843707).

123031562053 is a wasteful number, since it uses less digits than its factorization.

123031562053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36468.

The product of its (nonzero) digits is 16200, while the sum is 31.

Adding to 123031562053 its reverse (350265130321), we get a palindrome (473296692374).

The spelling of 123031562053 in words is "one hundred twenty-three billion, thirty-one million, five hundred sixty-two thousand, fifty-three".

Divisors: 1 17 29 493 9151 27271 155567 265379 463607 790859 4511443 13444603 249556921 4242467657 7237150709 123031562053