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31025516130023 = 187933924142071
BaseRepresentation
bin1110000110111101100001…
…10111100010111011100111
311001212000021120012220001212
413003132300313202323213
513031310224112130043
6145552531512542035
76351343132563662
oct703366067427347
9131760246186055
1031025516130023
119981936027108
123590b526b191b
131440902b5317c
147939005306d9
1538c0a16b5018
hex1c37b0de2ee7

31025516130023 has 8 divisors (see below), whose sum is σ = 31028695234656. Its totient is φ = 31022337225600.

The previous prime is 31025516130017. The next prime is 31025516130107. The reversal of 31025516130023 is 32003161552013.

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

It is a cyclic number.

It is not a de Polignac number, because 31025516130023 - 28 = 31025516129767 is a prime.

It is a super-2 number, since 2×310255161300232 (a number of 28 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 (31025516130823) 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, 737435078 + ... + 737477148.

It is an arithmetic number, because the mean of its divisors is an integer number (3878586904332).

Almost surely, 231025516130023 is an apocalyptic number.

31025516130023 is a deficient number, since it is larger than the sum of its proper divisors (3179104633).

31025516130023 is a wasteful number, since it uses less digits than its factorization.

31025516130023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100105.

The product of its (nonzero) digits is 16200, while the sum is 32.

Adding to 31025516130023 its reverse (32003161552013), we get a palindrome (63028677682036).

The spelling of 31025516130023 in words is "thirty-one trillion, twenty-five billion, five hundred sixteen million, one hundred thirty thousand, twenty-three".

Divisors: 1 18793 39241 42071 737456113 790640303 1650908111 31025516130023