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131319974 = 2471397021
BaseRepresentation
bin1111101001111…
…00100010100110
3100011002202010202
413310330202212
5232104214344
621010350502
73153126032
oct764744246
9304082122
10131319974
1168143705
1237b8b432
132128b536
14136251c2
15b7de94e
hex7d3c8a6

131319974 has 8 divisors (see below), whose sum is σ = 201171168. Its totient is φ = 64262920.

The previous prime is 131319973. The next prime is 131319977. The reversal of 131319974 is 479913131.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131319971) 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, 698417 + ... + 698604.

It is an arithmetic number, because the mean of its divisors is an integer number (25146396).

Almost surely, 2131319974 is an apocalyptic number.

131319974 is a deficient number, since it is larger than the sum of its proper divisors (69851194).

131319974 is a wasteful number, since it uses less digits than its factorization.

131319974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397070.

The product of its digits is 20412, while the sum is 38.

The square root of 131319974 is about 11459.4927461908. The cubic root of 131319974 is about 508.2884751482.

The spelling of 131319974 in words is "one hundred thirty-one million, three hundred nineteen thousand, nine hundred seventy-four".

Divisors: 1 2 47 94 1397021 2794042 65659987 131319974