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1230100331 = 1772358843
BaseRepresentation
bin100100101010001…
…1101011101101011
310011201122120102112
41021110131131223
510004401202311
6322021152535
742324452225
oct11124353553
93151576375
101230100331
115813a5649
122a3b5b74b
13167b03025
14b9527415
1572ed428b
hex4951d76b

1230100331 has 4 divisors (see below), whose sum is σ = 1302459192. Its totient is φ = 1157741472.

The previous prime is 1230100321. The next prime is 1230100379. The reversal of 1230100331 is 1330010321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1330010321 = 10712430003.

It is a cyclic number.

It is not a de Polignac number, because 1230100331 - 210 = 1230099307 is a prime.

It is a super-2 number, since 2×12301003312 = 3026293648652619122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230100321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36179405 + ... + 36179438.

It is an arithmetic number, because the mean of its divisors is an integer number (325614798).

Almost surely, 21230100331 is an apocalyptic number.

1230100331 is a deficient number, since it is larger than the sum of its proper divisors (72358861).

1230100331 is an equidigital number, since it uses as much as digits as its factorization.

1230100331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72358860.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 1230100331 is about 35072.7861881545. The cubic root of 1230100331 is about 1071.4704013578.

Adding to 1230100331 its reverse (1330010321), we get a palindrome (2560110652).

The spelling of 1230100331 in words is "one billion, two hundred thirty million, one hundred thousand, three hundred thirty-one".

Divisors: 1 17 72358843 1230100331