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9902313013031 = 31193174835849
BaseRepresentation
bin1001000000011000111111…
…0110010111111100100111
31022001122121012221010221222
42100012033312113330213
52244214414112404111
633021020525530555
72041263355556105
oct220061766277447
938048535833858
109902313013031
1131786025a793a
12113b174713a5b
1356aa268c905a
142633bb366c75
151228adcea7db
hex9018fd97f27

9902313013031 has 4 divisors (see below), whose sum is σ = 9905487852000. Its totient is φ = 9899138174064.

The previous prime is 9902313012959. The next prime is 9902313013051. The reversal of 9902313013031 is 1303103132099.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9902313013031 - 214 = 9902312996647 is a prime.

It is a super-2 number, since 2×99023130130312 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9902313012982 and 9902313013000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9902313013051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1587414806 + ... + 1587421043.

It is an arithmetic number, because the mean of its divisors is an integer number (2476371963000).

Almost surely, 29902313013031 is an apocalyptic number.

9902313013031 is a deficient number, since it is larger than the sum of its proper divisors (3174838969).

9902313013031 is a wasteful number, since it uses less digits than its factorization.

9902313013031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3174838968.

The product of its (nonzero) digits is 13122, while the sum is 35.

The spelling of 9902313013031 in words is "nine trillion, nine hundred two billion, three hundred thirteen million, thirteen thousand, thirty-one".

Divisors: 1 3119 3174835849 9902313013031