Search a number
-
+
130746431 = 731791047
BaseRepresentation
bin1111100101100…
…00100000111111
3100010000121101102
413302300200333
5231432341211
620550203315
73145216634
oct762604077
9303017342
10130746431
1167891802
123795353b
132111a46a
141351618b
15b729a3b
hex7cb083f

130746431 has 4 divisors (see below), whose sum is σ = 132537552. Its totient is φ = 128955312.

The previous prime is 130746379. The next prime is 130746463. The reversal of 130746431 is 134647031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134647031 = 539324967.

It is a cyclic number.

It is not a de Polignac number, because 130746431 - 26 = 130746367 is a prime.

It is a super-2 number, since 2×1307464312 = 34189258438475522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130746394 and 130746403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130746131) 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, 895451 + ... + 895596.

It is an arithmetic number, because the mean of its divisors is an integer number (33134388).

Almost surely, 2130746431 is an apocalyptic number.

130746431 is a deficient number, since it is larger than the sum of its proper divisors (1791121).

130746431 is an equidigital number, since it uses as much as digits as its factorization.

130746431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791120.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 130746431 is about 11434.4405634906. The cubic root of 130746431 is about 507.5474080297.

The spelling of 130746431 in words is "one hundred thirty million, seven hundred forty-six thousand, four hundred thirty-one".

Divisors: 1 73 1791047 130746431