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131990700 = 22352439969
BaseRepresentation
bin1111101111000…
…00010010101100
3100012100211012110
413313200102230
5232242200300
621033004020
73161621352
oct767402254
9305324173
10131990700
1168561626
1238253610
132146490a
141375b7d2
15b8c3550
hex7de04ac

131990700 has 36 divisors (see below), whose sum is σ = 381893960. Its totient is φ = 35197440.

The previous prime is 131990681. The next prime is 131990731. The reversal of 131990700 is 7099131.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 219685 + ... + 220284.

Almost surely, 2131990700 is an apocalyptic number.

131990700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131990700 is an abundant number, since it is smaller than the sum of its proper divisors (249903260).

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

131990700 is a wasteful number, since it uses less digits than its factorization.

131990700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439986 (or 439979 counting only the distinct ones).

The product of its (nonzero) digits is 1701, while the sum is 30.

The square root of 131990700 is about 11488.7205553969. The cubic root of 131990700 is about 509.1523790378.

The spelling of 131990700 in words is "one hundred thirty-one million, nine hundred ninety thousand, seven hundred".

Divisors: 1 2 3 4 5 6 10 12 15 20 25 30 50 60 75 100 150 300 439969 879938 1319907 1759876 2199845 2639814 4399690 5279628 6599535 8799380 10999225 13199070 21998450 26398140 32997675 43996900 65995350 131990700