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131030706 = 2321838451
BaseRepresentation
bin1111100111101…
…01111010110010
3100010120001100010
413303311322302
5232020440311
621000235350
73150512502
oct763657262
9303501303
10131030706
1167a66344
1237a6bb56
13211b9981
141358ba02
15b783da6
hex7cf5eb2

131030706 has 8 divisors (see below), whose sum is σ = 262061424. Its totient is φ = 43676900.

The previous prime is 131030699. The next prime is 131030723. The reversal of 131030706 is 607030131.

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

131030706 is an admirable number.

It is a Curzon 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, 10919220 + ... + 10919231.

It is an arithmetic number, because the mean of its divisors is an integer number (32757678).

Almost surely, 2131030706 is an apocalyptic number.

131030706 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131030706 is a wasteful number, since it uses less digits than its factorization.

131030706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21838456.

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 131030706 is about 11446.8644615021. The cubic root of 131030706 is about 507.9149861871.

Adding to 131030706 its reverse (607030131), we get a palindrome (738060837).

The spelling of 131030706 in words is "one hundred thirty-one million, thirty thousand, seven hundred six".

Divisors: 1 2 3 6 21838451 43676902 65515353 131030706