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131807670 = 23513193331
BaseRepresentation
bin1111101101100…
…11100110110110
3100012000112010120
413312303212312
5232220321140
621025032410
73160226631
oct766634666
9305015116
10131807670
1168447065
1238185706
13213cc507
1413710c18
15b8891d0
hex7db39b6

131807670 has 32 divisors (see below), whose sum is σ = 316673280. Its totient is φ = 35111520.

The previous prime is 131807659. The next prime is 131807677. The reversal of 131807670 is 76708131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131807677) 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, 37905 + ... + 41235.

It is an arithmetic number, because the mean of its divisors is an integer number (9896040).

Almost surely, 2131807670 is an apocalyptic number.

131807670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131807670 is an abundant number, since it is smaller than the sum of its proper divisors (184865610).

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

131807670 is a wasteful number, since it uses less digits than its factorization.

131807670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4660.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 131807670 is about 11480.7521530604. The cubic root of 131807670 is about 508.9169249025.

The spelling of 131807670 in words is "one hundred thirty-one million, eight hundred seven thousand, six hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 1319 2638 3331 3957 6595 6662 7914 9993 13190 16655 19785 19986 33310 39570 49965 99930 4393589 8787178 13180767 21967945 26361534 43935890 65903835 131807670