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230303031 = 3710966811
BaseRepresentation
bin11011011101000…
…10010100110111
3121001100121100220
431232202110313
5432424144111
634504105423
75464354260
oct1556422467
9531317326
10230303031
11109000092
1265165273
13389371aa
142282d967
1515342e06
hexdba2537

230303031 has 8 divisors (see below), whose sum is σ = 350937984. Its totient is φ = 131601720.

The previous prime is 230303023. The next prime is 230303033. The reversal of 230303031 is 130303032.

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

It is not a de Polignac number, because 230303031 - 23 = 230303023 is a prime.

It is a super-2 number, since 2×2303030312 = 106078972175573922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 230303031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230303033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5483385 + ... + 5483426.

It is an arithmetic number, because the mean of its divisors is an integer number (43867248).

Almost surely, 2230303031 is an apocalyptic number.

230303031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

230303031 is a deficient number, since it is larger than the sum of its proper divisors (120634953).

230303031 is a wasteful number, since it uses less digits than its factorization.

230303031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10966821.

The product of its (nonzero) digits is 162, while the sum is 15.

The square root of 230303031 is about 15175.7382357499. The cubic root of 230303031 is about 612.9615289165.

Adding to 230303031 its reverse (130303032), we get a palindrome (360606063).

Subtracting from 230303031 its reverse (130303032), we obtain a palindrome (99999999).

The spelling of 230303031 in words is "two hundred thirty million, three hundred three thousand, thirty-one".

Divisors: 1 3 7 21 10966811 32900433 76767677 230303031