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130342973 = 224358111
BaseRepresentation
bin1111100010011…
…10000000111101
3100002021002221112
413301032000331
5231331433343
620533411405
73141616445
oct761160075
9302232845
10130342973
1167636672
1237799b65
1321008927
141344d125
15b69a218
hex7c4e03d

130342973 has 4 divisors (see below), whose sum is σ = 130403328. Its totient is φ = 130282620.

The previous prime is 130342957. The next prime is 130342981. The reversal of 130342973 is 379243031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 379243031 = 3739101429.

It is a cyclic number.

It is not a de Polignac number, because 130342973 - 24 = 130342957 is a prime.

It is a super-2 number, since 2×1303429732 = 33978581220957458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130342913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26813 + ... + 31298.

It is an arithmetic number, because the mean of its divisors is an integer number (32600832).

Almost surely, 2130342973 is an apocalyptic number.

It is an amenable number.

130342973 is a deficient number, since it is larger than the sum of its proper divisors (60355).

130342973 is an equidigital number, since it uses as much as digits as its factorization.

130342973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60354.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 130342973 is about 11416.7847049859. The cubic root of 130342973 is about 507.0248059891.

The spelling of 130342973 in words is "one hundred thirty million, three hundred forty-two thousand, nine hundred seventy-three".

Divisors: 1 2243 58111 130342973