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13131223003 = 37354897919
BaseRepresentation
bin11000011101010111…
…01000111111011011
31020220010201020120201
430032223220333123
5203343043114003
610010555403031
7643255360663
oct141653507733
936803636521
1013131223003
115629262218
122665753477
131313628052
148c7d671a3
1551cc22b1d
hex30eae8fdb

13131223003 has 4 divisors (see below), whose sum is σ = 13486120960. Its totient is φ = 12776325048.

The previous prime is 13131222983. The next prime is 13131223037. The reversal of 13131223003 is 30032213131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30032213131 = 231305748397.

It is a cyclic number.

It is not a de Polignac number, because 13131223003 - 229 = 12594352091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13131223093) 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, 177448923 + ... + 177448996.

It is an arithmetic number, because the mean of its divisors is an integer number (3371530240).

Almost surely, 213131223003 is an apocalyptic number.

13131223003 is a deficient number, since it is larger than the sum of its proper divisors (354897957).

13131223003 is an equidigital number, since it uses as much as digits as its factorization.

13131223003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354897956.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 13131223003 its reverse (30032213131), we get a palindrome (43163436134).

The spelling of 13131223003 in words is "thirteen billion, one hundred thirty-one million, two hundred twenty-three thousand, three".

Divisors: 1 37 354897919 13131223003