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131080302 = 23317142789
BaseRepresentation
bin1111101000000…
…10000001101110
3100010122120101000
413310002001232
5232024032202
621001301130
73151110213
oct764020156
9303576330
10131080302
1167a9a631
1237a947a6
1321206412
14135a1b0a
15b79391c
hex7d0206e

131080302 has 32 divisors (see below), whose sum is σ = 308426400. Its totient is φ = 41122944.

The previous prime is 131080283. The next prime is 131080343. The reversal of 131080302 is 203080131.

It is a super-2 number, since 2×1310803022 = 34364091144822408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70477 + ... + 72312.

It is an arithmetic number, because the mean of its divisors is an integer number (9638325).

Almost surely, 2131080302 is an apocalyptic number.

131080302 is an abundant number, since it is smaller than the sum of its proper divisors (177346098).

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

131080302 is a wasteful number, since it uses less digits than its factorization.

131080302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142817 (or 142811 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 131080302 is about 11449.0306139865. The cubic root of 131080302 is about 507.9790611784.

The spelling of 131080302 in words is "one hundred thirty-one million, eighty thousand, three hundred two".

Divisors: 1 2 3 6 9 17 18 27 34 51 54 102 153 306 459 918 142789 285578 428367 856734 1285101 2427413 2570202 3855303 4854826 7282239 7710606 14564478 21846717 43693434 65540151 131080302