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31013000103 = 349121054311
BaseRepresentation
bin11100111000100001…
…001101001110100111
32222001100102122021110
4130320201031032213
51002003312000403
622125220120103
72145350102631
oct347041151647
988040378243
1031013000103
1112175036aa8
126016236033
132c03204547
141702bbba51
15c17a27103
hex73884d3a7

31013000103 has 8 divisors (see below), whose sum is σ = 41434886016. Its totient is φ = 20633223800.

The previous prime is 31013000101. The next prime is 31013000111. The reversal of 31013000103 is 30100031013.

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 31013000103 - 21 = 31013000101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31013000101) 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, 10525683 + ... + 10528628.

It is an arithmetic number, because the mean of its divisors is an integer number (5179360752).

Almost surely, 231013000103 is an apocalyptic number.

31013000103 is a deficient number, since it is larger than the sum of its proper divisors (10421885913).

31013000103 is a wasteful number, since it uses less digits than its factorization.

31013000103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21054805.

The product of its (nonzero) digits is 27, while the sum is 12.

Adding to 31013000103 its reverse (30100031013), we get a palindrome (61113031116).

The spelling of 31013000103 in words is "thirty-one billion, thirteen million, one hundred three", and thus it is an aban number.

Divisors: 1 3 491 1473 21054311 63162933 10337666701 31013000103