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331130123 = 2691230967
BaseRepresentation
bin10011101111001…
…010010100001011
3212002002011010122
4103233022110023
51134232130443
652505133455
711130362642
oct2357122413
9762064118
10331130123
1115aa06a65
1292a8a28b
13537aa2ac
1431d98359
151e10c968
hex13bca50b

331130123 has 4 divisors (see below), whose sum is σ = 332361360. Its totient is φ = 329898888.

The previous prime is 331130101. The next prime is 331130171. The reversal of 331130123 is 321031133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321031133 = 3110355843.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-331130123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331130183) 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, 615215 + ... + 615752.

It is an arithmetic number, because the mean of its divisors is an integer number (83090340).

Almost surely, 2331130123 is an apocalyptic number.

331130123 is a deficient number, since it is larger than the sum of its proper divisors (1231237).

331130123 is a wasteful number, since it uses less digits than its factorization.

331130123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231236.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 331130123 is about 18196.9811507294. The cubic root of 331130123 is about 691.8302755430.

Adding to 331130123 its reverse (321031133), we get a palindrome (652161256).

The spelling of 331130123 in words is "three hundred thirty-one million, one hundred thirty thousand, one hundred twenty-three".

Divisors: 1 269 1230967 331130123