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131030123233 = 307426808219
BaseRepresentation
bin111101000001000000…
…0010000001011100001
3110112012201021221001011
41322002000100023201
54121322202420413
6140105554140521
712316022446042
oct1720200201341
9415181257034
10131030123233
115062a0a7a49
1221489881741
13c48242aac9
1464b02188c9
15361d4e533d
hex1e820102e1

131030123233 has 4 divisors (see below), whose sum is σ = 131456931760. Its totient is φ = 130603314708.

The previous prime is 131030123141. The next prime is 131030123243. The reversal of 131030123233 is 332321030131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-131030123233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131030123243) 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, 213403803 + ... + 213404416.

It is an arithmetic number, because the mean of its divisors is an integer number (32864232940).

Almost surely, 2131030123233 is an apocalyptic number.

It is an amenable number.

131030123233 is a deficient number, since it is larger than the sum of its proper divisors (426808527).

131030123233 is an equidigital number, since it uses as much as digits as its factorization.

131030123233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426808526.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 131030123233 its reverse (332321030131), we get a palindrome (463351153364).

The spelling of 131030123233 in words is "one hundred thirty-one billion, thirty million, one hundred twenty-three thousand, two hundred thirty-three".

Divisors: 1 307 426808219 131030123233