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13101331031 = 43304682117
BaseRepresentation
bin11000011001110011…
…00111001001010111
31020211001110120111122
430030321213021113
5203312420043111
610004010554155
7642443322245
oct141471471127
936731416448
1013101331031
1156133a5a08
12265773895b
13130a3902a9
148c3dc5795
1551a2bacdb
hex30ce67257

13101331031 has 4 divisors (see below), whose sum is σ = 13406013192. Its totient is φ = 12796648872.

The previous prime is 13101331021. The next prime is 13101331037. The reversal of 13101331031 is 13013310131.

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 13101331031 - 230 = 12027589207 is a prime.

It is a super-2 number, since 2×131013310312 (a number of 21 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 (13101331037) 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, 152341016 + ... + 152341101.

It is an arithmetic number, because the mean of its divisors is an integer number (3351503298).

Almost surely, 213101331031 is an apocalyptic number.

13101331031 is a deficient number, since it is larger than the sum of its proper divisors (304682161).

13101331031 is an equidigital number, since it uses as much as digits as its factorization.

13101331031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304682160.

The product of its (nonzero) digits is 81, while the sum is 17.

Adding to 13101331031 its reverse (13013310131), we get a palindrome (26114641162).

The spelling of 13101331031 in words is "thirteen billion, one hundred one million, three hundred thirty-one thousand, thirty-one".

Divisors: 1 43 304682117 13101331031