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131303030 = 25101130003
BaseRepresentation
bin1111101001110…
…00011001110110
3100011001212220012
413310320121312
5232103144110
621010140222
73153025445
oct764703166
9304055805
10131303030
1168131a01
1237b81672
1321283901
141361cd5c
15b7d9905
hex7d38676

131303030 has 16 divisors (see below), whose sum is σ = 238687344. Its totient is φ = 52000800.

The previous prime is 131303027. The next prime is 131303041. The reversal of 131303030 is 30303131.

It is a junction number, because it is equal to n+sod(n) for n = 131302996 and 131303014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63992 + ... + 66011.

It is an arithmetic number, because the mean of its divisors is an integer number (14917959).

Almost surely, 2131303030 is an apocalyptic number.

131303030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131303030 is a deficient number, since it is larger than the sum of its proper divisors (107384314).

131303030 is a wasteful number, since it uses less digits than its factorization.

131303030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130111.

The product of its (nonzero) digits is 81, while the sum is 14.

The square root of 131303030 is about 11458.7534226023. The cubic root of 131303030 is about 508.2666129995.

Adding to 131303030 its reverse (30303131), we get a palindrome (161606161).

The spelling of 131303030 in words is "one hundred thirty-one million, three hundred three thousand, thirty".

Divisors: 1 2 5 10 101 202 505 1010 130003 260006 650015 1300030 13130303 26260606 65651515 131303030