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131972202 = 2327331789
BaseRepresentation
bin1111101110110…
…11110001101010
3100012022212211100
413313123301222
5232241102302
621032342230
73161513415
oct767336152
9305285740
10131972202
116854973a
1238244976
132145937b
1413754b7c
15b8bcd1c
hex7ddbc6a

131972202 has 12 divisors (see below), whose sum is σ = 285939810. Its totient is φ = 43990728.

The previous prime is 131972201. The next prime is 131972209. The reversal of 131972202 is 202279131.

131972202 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 130850721 + 1121481 = 11439^2 + 1059^2 .

It is not an unprimeable number, because it can be changed into a prime (131972201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3665877 + ... + 3665912.

Almost surely, 2131972202 is an apocalyptic number.

131972202 is an abundant number, since it is smaller than the sum of its proper divisors (153967608).

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

131972202 is a wasteful number, since it uses less digits than its factorization.

131972202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7331797 (or 7331794 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 131972202 is about 11487.9154767086. The cubic root of 131972202 is about 509.1285926632.

The spelling of 131972202 in words is "one hundred thirty-one million, nine hundred seventy-two thousand, two hundred two".

Divisors: 1 2 3 6 9 18 7331789 14663578 21995367 43990734 65986101 131972202