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131203330 = 25157193433
BaseRepresentation
bin1111101001000…
…00000100000010
3100010212211010121
413310200010002
5232042001310
621004050454
73152131666
oct764400402
9303784117
10131203330
1168074005
1237b33a2a
132124a40b
14135d48a6
15b7ba0da
hex7d20102

131203330 has 32 divisors (see below), whose sum is σ = 239453424. Its totient is φ = 51757056.

The previous prime is 131203309. The next prime is 131203333. The reversal of 131203330 is 33302131.

It can be written as a sum of positive squares in 8 ways, for example, as 8059921 + 123143409 = 2839^2 + 11097^2 .

It is not an unprimeable number, because it can be changed into a prime (131203333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302794 + ... + 303226.

Almost surely, 2131203330 is an apocalyptic number.

131203330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131203330 is a deficient number, since it is larger than the sum of its proper divisors (108250094).

131203330 is a wasteful number, since it uses less digits than its factorization.

131203330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 131203330 is about 11454.4022105040. The cubic root of 131203330 is about 508.1379360691.

Adding to 131203330 its reverse (33302131), we get a palindrome (164505461).

The spelling of 131203330 in words is "one hundred thirty-one million, two hundred three thousand, three hundred thirty".

Divisors: 1 2 5 10 157 193 314 386 433 785 866 965 1570 1930 2165 4330 30301 60602 67981 83569 135962 151505 167138 303010 339905 417845 679810 835690 13120333 26240666 65601665 131203330