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131955933 = 3311418881
BaseRepresentation
bin1111101110101…
…11110011011101
3100012022001111210
413313113303131
5232240042213
621032135033
73161415114
oct767276335
9305261453
10131955933
116853849a
1238237479
1321451b45
141374cc7b
15b8b80c3
hex7dd7cdd

131955933 has 8 divisors (see below), whose sum is σ = 181616896. Its totient is φ = 85132800.

The previous prime is 131955911. The next prime is 131955953. The reversal of 131955933 is 339559131.

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

It is not a de Polignac number, because 131955933 - 210 = 131954909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131955891 and 131955900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131955953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 709348 + ... + 709533.

It is an arithmetic number, because the mean of its divisors is an integer number (22702112).

Almost surely, 2131955933 is an apocalyptic number.

It is an amenable number.

131955933 is a deficient number, since it is larger than the sum of its proper divisors (49660963).

131955933 is a wasteful number, since it uses less digits than its factorization.

131955933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418915.

The product of its digits is 54675, while the sum is 39.

The square root of 131955933 is about 11487.2073629756. The cubic root of 131955933 is about 509.1076706979.

The spelling of 131955933 in words is "one hundred thirty-one million, nine hundred fifty-five thousand, nine hundred thirty-three".

Divisors: 1 3 31 93 1418881 4256643 43985311 131955933