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30102131006 = 215051065503
BaseRepresentation
bin11100000010001110…
…100001000100111110
32212200212110200202222
4130002032201010332
5443122121143011
621455001045342
72113646614613
oct340216410476
985625420688
1030102131006
1111847960622
125a01186852
132ab95a384c
141657c3250a
15bb2a9eddb
hex7023a113e

30102131006 has 4 divisors (see below), whose sum is σ = 45153196512. Its totient is φ = 15051065502.

The previous prime is 30102130987. The next prime is 30102131009. The reversal of 30102131006 is 60013120103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60013120103 = 371621976219.

It is a super-2 number, since 2×301021310062 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30102131009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7525532750 + ... + 7525532753.

It is an arithmetic number, because the mean of its divisors is an integer number (11288299128).

Almost surely, 230102131006 is an apocalyptic number.

30102131006 is a deficient number, since it is larger than the sum of its proper divisors (15051065506).

30102131006 is a wasteful number, since it uses less digits than its factorization.

30102131006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15051065505.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 30102131006 its reverse (60013120103), we get a palindrome (90115251109).

The spelling of 30102131006 in words is "thirty billion, one hundred two million, one hundred thirty-one thousand, six".

Divisors: 1 2 15051065503 30102131006