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131040458 = 2371770817
BaseRepresentation
bin1111100111110…
…00010011001010
3100010120112201022
413303320103022
5232021243313
621000352442
73150553103
oct763702312
9303515638
10131040458
1167a726aa
1237a75722
13211c1243
14135913aa
15b786c08
hex7cf84ca

131040458 has 8 divisors (see below), whose sum is σ = 201873252. Its totient is φ = 63749376.

The previous prime is 131040457. The next prime is 131040461. The reversal of 131040458 is 854040131.

It can be written as a sum of positive squares in 2 ways, for example, as 126405049 + 4635409 = 11243^2 + 2153^2 .

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

It is not an unprimeable number, because it can be changed into a prime (131040457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 885335 + ... + 885482.

Almost surely, 2131040458 is an apocalyptic number.

131040458 is a deficient number, since it is larger than the sum of its proper divisors (70832794).

131040458 is a wasteful number, since it uses less digits than its factorization.

131040458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770856.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 131040458 is about 11447.2904217548. The cubic root of 131040458 is about 507.9275864501.

Adding to 131040458 its reverse (854040131), we get a palindrome (985080589).

The spelling of 131040458 in words is "one hundred thirty-one million, forty thousand, four hundred fifty-eight".

Divisors: 1 2 37 74 1770817 3541634 65520229 131040458