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193120131 = 3371739821
BaseRepresentation
bin10111000001011…
…00011110000011
3111110101112000110
423200230132003
5343414321011
631055122403
74533331311
oct1340543603
9443345013
10193120131
119a014016
1254813403
1331018989
141b9110b1
1511e4aba6
hexb82c783

193120131 has 8 divisors (see below), whose sum is σ = 264452944. Its totient is φ = 125267040.

The previous prime is 193120129. The next prime is 193120139. The reversal of 193120131 is 131021391.

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

It is not a de Polignac number, because 193120131 - 21 = 193120129 is a prime.

It is a super-2 number, since 2×1931201312 = 74590769994914322, 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 = 193120098 and 193120107.

It is not an unprimeable number, because it can be changed into a prime (193120139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 869800 + ... + 870021.

It is an arithmetic number, because the mean of its divisors is an integer number (33056618).

Almost surely, 2193120131 is an apocalyptic number.

193120131 is a deficient number, since it is larger than the sum of its proper divisors (71332813).

193120131 is a wasteful number, since it uses less digits than its factorization.

193120131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739861.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 193120131 is about 13896.7669261595. The cubic root of 193120131 is about 578.0195343470.

The spelling of 193120131 in words is "one hundred ninety-three million, one hundred twenty thousand, one hundred thirty-one".

Divisors: 1 3 37 111 1739821 5219463 64373377 193120131