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311130230 = 2531113023
BaseRepresentation
bin10010100010110…
…111100001110110
3210200110001102212
4102202313201312
51114122131410
650512333422
710465364135
oct2242674166
9720401385
10311130230
1114a696824
1288244272
134c5c6c38
142d46d91c
151c4abb05
hex128b7876

311130230 has 8 divisors (see below), whose sum is σ = 560034432. Its totient is φ = 124452088.

The previous prime is 311130227. The next prime is 311130257. The reversal of 311130230 is 32031113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15556502 + ... + 15556521.

It is an arithmetic number, because the mean of its divisors is an integer number (70004304).

Almost surely, 2311130230 is an apocalyptic number.

311130230 is a deficient number, since it is larger than the sum of its proper divisors (248904202).

311130230 is a wasteful number, since it uses less digits than its factorization.

311130230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31113030.

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

The square root of 311130230 is about 17638.8840349950. The cubic root of 311130230 is about 677.6114511892.

Adding to 311130230 its reverse (32031113), we get a palindrome (343161343).

The spelling of 311130230 in words is "three hundred eleven million, one hundred thirty thousand, two hundred thirty".

Divisors: 1 2 5 10 31113023 62226046 155565115 311130230