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131223110130 = 23357239449647
BaseRepresentation
bin111101000110110000…
…0011100000111110010
3110112201011102200022000
41322031200130013302
54122221104011010
6140141050354430
712323555014050
oct1721540340762
9415634380260
10131223110130
115071902a952
122152242ba16
13c4b33cac38
1464cbad31d0
1536304167c0
hex1e8d81c1f2

131223110130 has 256 divisors, whose sum is σ = 403107840000. Its totient is φ = 29755772928.

The previous prime is 131223110129. The next prime is 131223110131. The reversal of 131223110130 is 31011322131.

It is an interprime number because it is at equal distance from previous prime (131223110129) and next prime (131223110131).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (131223110131) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 202817467 + ... + 202818113.

It is an arithmetic number, because the mean of its divisors is an integer number (1574640000).

Almost surely, 2131223110130 is an apocalyptic number.

131223110130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 131223110130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201553920000).

131223110130 is an abundant number, since it is smaller than the sum of its proper divisors (271884729870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131223110130 is a wasteful number, since it uses less digits than its factorization.

131223110130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358 (or 1352 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 131223110130 its reverse (31011322131), we get a palindrome (162234432261).

The spelling of 131223110130 in words is "one hundred thirty-one billion, two hundred twenty-three million, one hundred ten thousand, one hundred thirty".